Comprehensive algebra worksheet featuring three sections of linear equation problems, ranging from basic fractions to complex bracket expansion.
Worksheet for solving linear equations with fractions and brackets for Level 7 algebra students.
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Step-by-step solution for: Solving Equations Maths Worksheet | Solving linear equations ...
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Show Answer Key & Explanations
Step-by-step solution for: Solving Equations Maths Worksheet | Solving linear equations ...
I'll solve the linear equations in your worksheet step by step, explaining each solution clearly.
Section A:
1) $\frac{2x+5}{3} = 11$
Multiply both sides by 3: $2x + 5 = 33$
Subtract 5: $2x = 28$
Divide by 2: $x = 14$
2) $\frac{8-2x}{5} = 5$
Multiply both sides by 5: $8 - 2x = 25$
Subtract 8: $-2x = 17$
Divide by -2: $x = -\frac{17}{2} = -8.5$
3) $\frac{5-9x}{6} = -2$
Multiply both sides by 6: $5 - 9x = -12$
Subtract 5: $-9x = -17$
Divide by -9: $x = \frac{17}{9} \approx 1.89$
4) $\frac{7x+6}{3} = 9 - 12$
Simplify right side: $\frac{7x+6}{3} = -3$
Multiply both sides by 3: $7x + 6 = -9$
Subtract 6: $7x = -15$
Divide by 7: $x = -\frac{15}{7} \approx -2.14$
5) $8x + \frac{1-4x}{7} = 7$
Multiply everything by 7: $56x + 1 - 4x = 49$
Combine like terms: $52x + 1 = 49$
Subtract 1: $52x = 48$
Divide by 52: $x = \frac{48}{52} = \frac{12}{13} \approx 0.92$
6) $\frac{5}{6}x = -6$
Multiply both sides by 6: $5x = -36$
Divide by 5: $x = -\frac{36}{5} = -7.2$
7) $\frac{11}{4}x - 9 = 3$
Add 9: $\frac{11}{4}x = 12$
Multiply by 4: $11x = 48$
Divide by 11: $x = \frac{48}{11} \approx 4.36$
8) $\frac{5}{4}x = 8x$
Subtract $\frac{5}{4}x$: $0 = 8x - \frac{5}{4}x$
$0 = \frac{32}{4}x - \frac{5}{4}x = \frac{27}{4}x$
$x = 0$
9) $2x + \frac{4}{3}x = 7 - 1$
Simplify right side: $2x + \frac{4}{3}x = 6$
Combine like terms: $\frac{6}{3}x + \frac{4}{3}x = \frac{10}{3}x = 6$
Multiply by 3: $10x = 18$
Divide by 10: $x = \frac{18}{10} = \frac{9}{5} = 1.8$
10) $4 - \frac{3x}{2} = 3x - 5$
Multiply everything by 2: $8 - 3x = 6x - 10$
Add 3x: $8 = 9x - 10$
Add 10: $18 = 9x$
Divide by 9: $x = 2$
11) $\frac{6}{5}x - 2 = 10$
Add 2: $\frac{6}{5}x = 12$
Multiply by 5: $6x = 60$
Divide by 6: $x = 10$
12) $4 - \frac{2x}{9} = -1$
Subtract 4: $-\frac{2x}{9} = -5$
Multiply by -9: $2x = 45$
Divide by 2: $x = \frac{45}{2} = 22.5$
Section B:
1) $4(2x-3) = 8(2x-5)$
Expand: $8x - 12 = 16x - 40$
Subtract 8x: $-12 = 8x - 40$
Add 40: $28 = 8x$
Divide by 8: $x = \frac{28}{8} = \frac{7}{2} = 3.5$
2) $3(4x-5) + 5(2x-5)$
Wait, this appears to be missing an equals sign. Assuming it's $3(4x-5) + 5(2x-5) = 0$:
Expand: $12x - 15 + 10x - 25 = 0$
Combine: $22x - 40 = 0$
Add 40: $22x = 40$
Divide by 22: $x = \frac{40}{22} = \frac{20}{11} \approx 1.82$
3) $8(6x+2) = 5(x-2)$
Expand: $48x + 16 = 5x - 10$
Subtract 5x: $43x + 16 = -10$
Subtract 16: $43x = -26$
Divide by 43: $x = -\frac{26}{43} \approx -0.605$
4) $2(3x-4) + 7(11-2x)$
Again, missing equals sign. Assuming $= 0$:
Expand: $6x - 8 + 77 - 14x = 0$
Combine: $-8x + 69 = 0$
Subtract 69: $-8x = -69$
Divide by -8: $x = \frac{69}{8} = 8.625$
5) $7(5-x) - 4(x-11)$
Assuming $= 0$: $35 - 7x - 4x + 44 = 0$
Combine: $-11x + 79 = 0$
Subtract 79: $-11x = -79$
Divide by -11: $x = \frac{79}{11} \approx 7.18$
6) $-4(x-8) - 6(4+3x)$
Assuming $= 0$: $-4x + 32 - 24 - 18x = 0$
Combine: $-22x + 8 = 0$
Subtract 8: $-22x = -8$
Divide by -22: $x = \frac{8}{22} = \frac{4}{11} \approx 0.364$
7) $7(4-3x) - 2(8x-9) = 6$
Expand: $28 - 21x - 16x + 18 = 6$
Combine: $-37x + 46 = 6$
Subtract 46: $-37x = -40$
Divide by -37: $x = \frac{40}{37} \approx 1.08$
8) $-6(3-4x) + 2x = 8(x+11)$
Expand: $-18 + 24x + 2x = 8x + 88$
Combine: $26x - 18 = 8x + 88$
Subtract 8x: $18x - 18 = 88$
Add 18: $18x = 106$
Divide by 18: $x = \frac{106}{18} = \frac{53}{9} \approx 5.89$
9) $3(2x-6) - 3(-4x-3)$
Assuming $= 0$: $6x - 18 + 12x + 9 = 0$
Combine: $18x - 9 = 0$
Add 9: $18x = 9$
Divide by 18: $x = \frac{1}{2} = 0.5$
10) $9(2x-1) - 3x = 3(12-x)$
Expand: $18x - 9 - 3x = 36 - 3x$
Combine: $15x - 9 = 36 - 3x$
Add 3x: $18x - 9 = 36$
Add 9: $18x = 45$
Divide by 18: $x = \frac{45}{18} = \frac{5}{2} = 2.5$
11) $4x - (2x-8) = 5(1-2x)$
Expand: $4x - 2x + 8 = 5 - 10x$
Combine: $2x + 8 = 5 - 10x$
Add 10x: $12x + 8 = 5$
Subtract 8: $12x = -3$
Divide by 12: $x = -\frac{3}{12} = -\frac{1}{4} = -0.25$
12) $10 - 6(8x-2) = 5x - (3-4x)$
Expand: $10 - 48x + 12 = 5x - 3 + 4x$
Combine: $22 - 48x = 9x - 3$
Add 48x: $22 = 57x - 3$
Add 3: $25 = 57x$
Divide by 57: $x = \frac{25}{57} \approx 0.439$
Section C:
1) $\frac{5x-2}{3} = \frac{4x+1}{2}$
Cross multiply: $2(5x-2) = 3(4x+1)$
Expand: $10x - 4 = 12x + 3$
Subtract 10x: $-4 = 2x + 3$
Subtract 3: $-7 = 2x$
Divide by 2: $x = -\frac{7}{2} = -3.5$
2) $\frac{7x-8}{5} = \frac{2x+5}{6}$
Cross multiply: $6(7x-8) = 5(2x+5)$
Expand: $42x - 48 = 10x + 25$
Subtract 10x: $32x - 48 = 25$
Add 48: $32x = 73$
Divide by 32: $x = \frac{73}{32} \approx 2.28$
3) $-\frac{8x-1}{2} = \frac{5-3x}{6}$
Multiply both sides by 6: $-3(8x-1) = 5-3x$
Expand: $-24x + 3 = 5 - 3x$
Add 24x: $3 = 5 + 21x$
Subtract 5: $-2 = 21x$
Divide by 21: $x = -\frac{2}{21} \approx -0.095$
4) $\frac{5(5x-11)}{3} = \frac{3(11-3x)}{4}$
Multiply both sides by 12: $4(5)(5x-11) = 3(3)(11-3x)$
$20(5x-11) = 9(11-3x)$
Expand: $100x - 220 = 99 - 27x$
Add 27x: $127x - 220 = 99$
Add 220: $127x = 319$
Divide by 127: $x = \frac{319}{127} \approx 2.51$
5) $\frac{3(2x-5)}{4} = \frac{2(6x-3)}{5}$
Multiply both sides by 20: $5(3)(2x-5) = 4(2)(6x-3)$
$15(2x-5) = 8(6x-3)$
Expand: $30x - 75 = 48x - 24$
Subtract 30x: $-75 = 18x - 24$
Add 24: $-51 = 18x$
Divide by 18: $x = -\frac{51}{18} = -\frac{17}{6} \approx -2.83$
6) $\frac{2(3x-5)}{3} = \frac{-4(5-2x)}{7}$
Multiply both sides by 21: $7(2)(3x-5) = 3(-4)(5-2x)$
$14(3x-5) = -12(5-2x)$
Expand: $42x - 70 = -60 + 24x$
Subtract 24x: $18x - 70 = -60$
Add 70: $18x = 10$
Divide by 18: $x = \frac{10}{18} = \frac{5}{9} \approx 0.556$
7) $\frac{5(2x-6)}{3} = \frac{-(8-12x)}{7}$
Multiply both sides by 21: $7(5)(2x-6) = 3(-1)(8-12x)$
$35(2x-6) = -3(8-12x)$
Expand: $70x - 210 = -24 + 36x$
Subtract 36x: $34x - 210 = -24$
Add 210: $34x = 186$
Divide by 34: $x = \frac{186}{34} = \frac{93}{17} \approx 5.47$
8) $\frac{5(5-3x)}{2} = \frac{5(3x-1)}{3}$
Multiply both sides by 6: $3(5)(5-3x) = 2(5)(3x-1)$
$15(5-3x) = 10(3x-1)$
Expand: $75 - 45x = 30x - 10$
Add 45x: $75 = 75x - 10$
Add 10: $85 = 75x$
Divide by 75: $x = \frac{85}{75} = \frac{17}{15} \approx 1.13$
9) $\frac{5}{3x-1} = 12$
Multiply both sides by (3x-1): $5 = 12(3x-1)$
Expand: $5 = 36x - 12$
Add 12: $17 = 36x$
Divide by 36: $x = \frac{17}{36} \approx 0.472$
10) $\frac{x+2}{3} = 4$
Multiply by 3: $x + 2 = 12$
Subtract 2: $x = 10$
11) $\frac{2x-9}{3} = -3$
Multiply by 3: $2x - 9 = -9$
Add 9: $2x = 0$
Divide by 2: $x = 0$
12) $\frac{3x-2}{3x+10} = \frac{1}{x-1}$
Cross multiply: $(3x-2)(x-1) = 1(3x+10)$
Expand: $3x^2 - 3x - 2x + 2 = 3x + 10$
Combine: $3x^2 - 5x + 2 = 3x + 10$
Subtract 3x: $3x^2 - 8x + 2 = 10$
Subtract 10: $3x^2 - 8x - 8 = 0$
Use quadratic formula: $x = \frac{8 \pm \sqrt{64 + 96}}{6} = \frac{8 \pm \sqrt{160}}{6} = \frac{8 \pm 4\sqrt{10}}{6} = \frac{4 \pm 2\sqrt{10}}{3}$
13) $\frac{2}{7x+3} = \frac{9}{2x-5}$
Cross multiply: $2(2x-5) = 9(7x+3)$
Expand: $4x - 10 = 63x + 27$
Subtract 4x: $-10 = 59x + 27$
Subtract 27: $-37 = 59x$
Divide by 59: $x = -\frac{37}{59} \approx -0.627$
14) $\frac{8}{6x-12} = \frac{11}{7x-10}$
Cross multiply: $8(7x-10) = 11(6x-12)$
Expand: $56x - 80 = 66x - 132$
Subtract 56x: $-80 = 10x - 132$
Add 132: $52 = 10x$
Divide by 10: $x = \frac{52}{10} = \frac{26}{5} = 5.2$
The solutions are complete! For Section B problems 2, 4, 5, and 6, I assumed they were equal to zero since no equality was specified. If these were meant to be different, please clarify.
Section A:
1) $\frac{2x+5}{3} = 11$
Multiply both sides by 3: $2x + 5 = 33$
Subtract 5: $2x = 28$
Divide by 2: $x = 14$
2) $\frac{8-2x}{5} = 5$
Multiply both sides by 5: $8 - 2x = 25$
Subtract 8: $-2x = 17$
Divide by -2: $x = -\frac{17}{2} = -8.5$
3) $\frac{5-9x}{6} = -2$
Multiply both sides by 6: $5 - 9x = -12$
Subtract 5: $-9x = -17$
Divide by -9: $x = \frac{17}{9} \approx 1.89$
4) $\frac{7x+6}{3} = 9 - 12$
Simplify right side: $\frac{7x+6}{3} = -3$
Multiply both sides by 3: $7x + 6 = -9$
Subtract 6: $7x = -15$
Divide by 7: $x = -\frac{15}{7} \approx -2.14$
5) $8x + \frac{1-4x}{7} = 7$
Multiply everything by 7: $56x + 1 - 4x = 49$
Combine like terms: $52x + 1 = 49$
Subtract 1: $52x = 48$
Divide by 52: $x = \frac{48}{52} = \frac{12}{13} \approx 0.92$
6) $\frac{5}{6}x = -6$
Multiply both sides by 6: $5x = -36$
Divide by 5: $x = -\frac{36}{5} = -7.2$
7) $\frac{11}{4}x - 9 = 3$
Add 9: $\frac{11}{4}x = 12$
Multiply by 4: $11x = 48$
Divide by 11: $x = \frac{48}{11} \approx 4.36$
8) $\frac{5}{4}x = 8x$
Subtract $\frac{5}{4}x$: $0 = 8x - \frac{5}{4}x$
$0 = \frac{32}{4}x - \frac{5}{4}x = \frac{27}{4}x$
$x = 0$
9) $2x + \frac{4}{3}x = 7 - 1$
Simplify right side: $2x + \frac{4}{3}x = 6$
Combine like terms: $\frac{6}{3}x + \frac{4}{3}x = \frac{10}{3}x = 6$
Multiply by 3: $10x = 18$
Divide by 10: $x = \frac{18}{10} = \frac{9}{5} = 1.8$
10) $4 - \frac{3x}{2} = 3x - 5$
Multiply everything by 2: $8 - 3x = 6x - 10$
Add 3x: $8 = 9x - 10$
Add 10: $18 = 9x$
Divide by 9: $x = 2$
11) $\frac{6}{5}x - 2 = 10$
Add 2: $\frac{6}{5}x = 12$
Multiply by 5: $6x = 60$
Divide by 6: $x = 10$
12) $4 - \frac{2x}{9} = -1$
Subtract 4: $-\frac{2x}{9} = -5$
Multiply by -9: $2x = 45$
Divide by 2: $x = \frac{45}{2} = 22.5$
Section B:
1) $4(2x-3) = 8(2x-5)$
Expand: $8x - 12 = 16x - 40$
Subtract 8x: $-12 = 8x - 40$
Add 40: $28 = 8x$
Divide by 8: $x = \frac{28}{8} = \frac{7}{2} = 3.5$
2) $3(4x-5) + 5(2x-5)$
Wait, this appears to be missing an equals sign. Assuming it's $3(4x-5) + 5(2x-5) = 0$:
Expand: $12x - 15 + 10x - 25 = 0$
Combine: $22x - 40 = 0$
Add 40: $22x = 40$
Divide by 22: $x = \frac{40}{22} = \frac{20}{11} \approx 1.82$
3) $8(6x+2) = 5(x-2)$
Expand: $48x + 16 = 5x - 10$
Subtract 5x: $43x + 16 = -10$
Subtract 16: $43x = -26$
Divide by 43: $x = -\frac{26}{43} \approx -0.605$
4) $2(3x-4) + 7(11-2x)$
Again, missing equals sign. Assuming $= 0$:
Expand: $6x - 8 + 77 - 14x = 0$
Combine: $-8x + 69 = 0$
Subtract 69: $-8x = -69$
Divide by -8: $x = \frac{69}{8} = 8.625$
5) $7(5-x) - 4(x-11)$
Assuming $= 0$: $35 - 7x - 4x + 44 = 0$
Combine: $-11x + 79 = 0$
Subtract 79: $-11x = -79$
Divide by -11: $x = \frac{79}{11} \approx 7.18$
6) $-4(x-8) - 6(4+3x)$
Assuming $= 0$: $-4x + 32 - 24 - 18x = 0$
Combine: $-22x + 8 = 0$
Subtract 8: $-22x = -8$
Divide by -22: $x = \frac{8}{22} = \frac{4}{11} \approx 0.364$
7) $7(4-3x) - 2(8x-9) = 6$
Expand: $28 - 21x - 16x + 18 = 6$
Combine: $-37x + 46 = 6$
Subtract 46: $-37x = -40$
Divide by -37: $x = \frac{40}{37} \approx 1.08$
8) $-6(3-4x) + 2x = 8(x+11)$
Expand: $-18 + 24x + 2x = 8x + 88$
Combine: $26x - 18 = 8x + 88$
Subtract 8x: $18x - 18 = 88$
Add 18: $18x = 106$
Divide by 18: $x = \frac{106}{18} = \frac{53}{9} \approx 5.89$
9) $3(2x-6) - 3(-4x-3)$
Assuming $= 0$: $6x - 18 + 12x + 9 = 0$
Combine: $18x - 9 = 0$
Add 9: $18x = 9$
Divide by 18: $x = \frac{1}{2} = 0.5$
10) $9(2x-1) - 3x = 3(12-x)$
Expand: $18x - 9 - 3x = 36 - 3x$
Combine: $15x - 9 = 36 - 3x$
Add 3x: $18x - 9 = 36$
Add 9: $18x = 45$
Divide by 18: $x = \frac{45}{18} = \frac{5}{2} = 2.5$
11) $4x - (2x-8) = 5(1-2x)$
Expand: $4x - 2x + 8 = 5 - 10x$
Combine: $2x + 8 = 5 - 10x$
Add 10x: $12x + 8 = 5$
Subtract 8: $12x = -3$
Divide by 12: $x = -\frac{3}{12} = -\frac{1}{4} = -0.25$
12) $10 - 6(8x-2) = 5x - (3-4x)$
Expand: $10 - 48x + 12 = 5x - 3 + 4x$
Combine: $22 - 48x = 9x - 3$
Add 48x: $22 = 57x - 3$
Add 3: $25 = 57x$
Divide by 57: $x = \frac{25}{57} \approx 0.439$
Section C:
1) $\frac{5x-2}{3} = \frac{4x+1}{2}$
Cross multiply: $2(5x-2) = 3(4x+1)$
Expand: $10x - 4 = 12x + 3$
Subtract 10x: $-4 = 2x + 3$
Subtract 3: $-7 = 2x$
Divide by 2: $x = -\frac{7}{2} = -3.5$
2) $\frac{7x-8}{5} = \frac{2x+5}{6}$
Cross multiply: $6(7x-8) = 5(2x+5)$
Expand: $42x - 48 = 10x + 25$
Subtract 10x: $32x - 48 = 25$
Add 48: $32x = 73$
Divide by 32: $x = \frac{73}{32} \approx 2.28$
3) $-\frac{8x-1}{2} = \frac{5-3x}{6}$
Multiply both sides by 6: $-3(8x-1) = 5-3x$
Expand: $-24x + 3 = 5 - 3x$
Add 24x: $3 = 5 + 21x$
Subtract 5: $-2 = 21x$
Divide by 21: $x = -\frac{2}{21} \approx -0.095$
4) $\frac{5(5x-11)}{3} = \frac{3(11-3x)}{4}$
Multiply both sides by 12: $4(5)(5x-11) = 3(3)(11-3x)$
$20(5x-11) = 9(11-3x)$
Expand: $100x - 220 = 99 - 27x$
Add 27x: $127x - 220 = 99$
Add 220: $127x = 319$
Divide by 127: $x = \frac{319}{127} \approx 2.51$
5) $\frac{3(2x-5)}{4} = \frac{2(6x-3)}{5}$
Multiply both sides by 20: $5(3)(2x-5) = 4(2)(6x-3)$
$15(2x-5) = 8(6x-3)$
Expand: $30x - 75 = 48x - 24$
Subtract 30x: $-75 = 18x - 24$
Add 24: $-51 = 18x$
Divide by 18: $x = -\frac{51}{18} = -\frac{17}{6} \approx -2.83$
6) $\frac{2(3x-5)}{3} = \frac{-4(5-2x)}{7}$
Multiply both sides by 21: $7(2)(3x-5) = 3(-4)(5-2x)$
$14(3x-5) = -12(5-2x)$
Expand: $42x - 70 = -60 + 24x$
Subtract 24x: $18x - 70 = -60$
Add 70: $18x = 10$
Divide by 18: $x = \frac{10}{18} = \frac{5}{9} \approx 0.556$
7) $\frac{5(2x-6)}{3} = \frac{-(8-12x)}{7}$
Multiply both sides by 21: $7(5)(2x-6) = 3(-1)(8-12x)$
$35(2x-6) = -3(8-12x)$
Expand: $70x - 210 = -24 + 36x$
Subtract 36x: $34x - 210 = -24$
Add 210: $34x = 186$
Divide by 34: $x = \frac{186}{34} = \frac{93}{17} \approx 5.47$
8) $\frac{5(5-3x)}{2} = \frac{5(3x-1)}{3}$
Multiply both sides by 6: $3(5)(5-3x) = 2(5)(3x-1)$
$15(5-3x) = 10(3x-1)$
Expand: $75 - 45x = 30x - 10$
Add 45x: $75 = 75x - 10$
Add 10: $85 = 75x$
Divide by 75: $x = \frac{85}{75} = \frac{17}{15} \approx 1.13$
9) $\frac{5}{3x-1} = 12$
Multiply both sides by (3x-1): $5 = 12(3x-1)$
Expand: $5 = 36x - 12$
Add 12: $17 = 36x$
Divide by 36: $x = \frac{17}{36} \approx 0.472$
10) $\frac{x+2}{3} = 4$
Multiply by 3: $x + 2 = 12$
Subtract 2: $x = 10$
11) $\frac{2x-9}{3} = -3$
Multiply by 3: $2x - 9 = -9$
Add 9: $2x = 0$
Divide by 2: $x = 0$
12) $\frac{3x-2}{3x+10} = \frac{1}{x-1}$
Cross multiply: $(3x-2)(x-1) = 1(3x+10)$
Expand: $3x^2 - 3x - 2x + 2 = 3x + 10$
Combine: $3x^2 - 5x + 2 = 3x + 10$
Subtract 3x: $3x^2 - 8x + 2 = 10$
Subtract 10: $3x^2 - 8x - 8 = 0$
Use quadratic formula: $x = \frac{8 \pm \sqrt{64 + 96}}{6} = \frac{8 \pm \sqrt{160}}{6} = \frac{8 \pm 4\sqrt{10}}{6} = \frac{4 \pm 2\sqrt{10}}{3}$
13) $\frac{2}{7x+3} = \frac{9}{2x-5}$
Cross multiply: $2(2x-5) = 9(7x+3)$
Expand: $4x - 10 = 63x + 27$
Subtract 4x: $-10 = 59x + 27$
Subtract 27: $-37 = 59x$
Divide by 59: $x = -\frac{37}{59} \approx -0.627$
14) $\frac{8}{6x-12} = \frac{11}{7x-10}$
Cross multiply: $8(7x-10) = 11(6x-12)$
Expand: $56x - 80 = 66x - 132$
Subtract 56x: $-80 = 10x - 132$
Add 132: $52 = 10x$
Divide by 10: $x = \frac{52}{10} = \frac{26}{5} = 5.2$
The solutions are complete! For Section B problems 2, 4, 5, and 6, I assumed they were equal to zero since no equality was specified. If these were meant to be different, please clarify.
Parent Tip: Review the logic above to help your child master the concept of math equations worksheet.