Let’s solve each equation step by step. Remember, we want to get the variable (x) alone on one side of the equation. We do this by undoing what’s being done to x — first addition/subtraction, then multiplication/division.
---
Equation 1:
\[
\frac{3}{4}x + 6 = 15
\]
Step 1: Subtract 6 from both sides.
\[
\frac{3}{4}x = 9
\]
Step 2: Multiply both sides by the reciprocal of \(\frac{3}{4}\), which is \(\frac{4}{3}\).
\[
x = 9 \cdot \frac{4}{3} = \frac{36}{3} = 12
\]
✔ Answer: \(x = 12\)
---
Equation 2:
\[
\frac{2}{3}x - 4 = 1
\]
Step 1: Add 4 to both sides.
\[
\frac{2}{3}x = 5
\]
Step 2: Multiply both sides by \(\frac{3}{2}\).
\[
x = 5 \cdot \frac{3}{2} = \frac{15}{2} = 7.5
\]
✔ Answer: \(x = 7.5\) or \(\frac{15}{2}\)
---
Equation 3:
\[
\frac{5}{6}x - 10 = 5
\]
Step 1: Add 10 to both sides.
\[
\frac{5}{6}x = 15
\]
Step 2: Multiply both sides by \(\frac{6}{5}\).
\[
x = 15 \cdot \frac{6}{5} = \frac{90}{5} = 18
\]
✔ Answer: \(x = 18\)
---
Equation 4:
\[
10 = \frac{2}{5}x - 8
\]
Step 1: Add 8 to both sides.
\[
18 = \frac{2}{5}x
\]
Step 2: Multiply both sides by \(\frac{5}{2}\).
\[
x = 18 \cdot \frac{5}{2} = \frac{90}{2} = 45
\]
✔ Answer: \(x = 45\)
---
Equation 5:
\[
\frac{4}{5}x - 2 = 2
\]
Step 1: Add 2 to both sides.
\[
\frac{4}{5}x = 4
\]
Step 2: Multiply both sides by \(\frac{5}{4}\).
\[
x = 4 \cdot \frac{5}{4} = 5
\]
✔ Answer: \(x = 5\)
---
Equation 6:
\[
6 = \frac{2}{3}x - 3
\]
Step 1: Add 3 to both sides.
\[
9 = \frac{2}{3}x
\]
Step 2: Multiply both sides by \(\frac{3}{2}\).
\[
x = 9 \cdot \frac{3}{2} = \frac{27}{2} = 13.5
\]
✔ Answer: \(x = 13.5\) or \(\frac{27}{2}\)
---
Equation 7:
\[
6 + \frac{7}{2}x = 13
\]
Step 1: Subtract 6 from both sides.
\[
\frac{7}{2}x = 7
\]
Step 2: Multiply both sides by \(\frac{2}{7}\).
\[
x = 7 \cdot \frac{2}{7} = 2
\]
✔ Answer: \(x = 2\)
---
Equation 8:
\[
\frac{7}{8}x - 6 = 8
\]
Step 1: Add 6 to both sides.
\[
\frac{7}{8}x = 14
\]
Step 2: Multiply both sides by \(\frac{8}{7}\).
\[
x = 14 \cdot \frac{8}{7} = \frac{112}{7} = 16
\]
✔ Answer: \(x = 16\)
---
Final Answer:
- Equation 1: \(x = 12\)
- Equation 2: \(x = 7.5\) or \(\frac{15}{2}\)
- Equation 3: \(x = 18\)
- Equation 4: \(x = 45\)
- Equation 5: \(x = 5\)
- Equation 6: \(x = 13.5\) or \(\frac{27}{2}\)
- Equation 7: \(x = 2\)
- Equation 8: \(x = 16\)
Parent Tip: Review the logic above to help your child master the concept of equations with fractions worksheet.