Linear equations worksheet for solving variables with various algebraic expressions.
A worksheet titled "LINEAR EQUATIONS" with 15 algebraic equations to solve for variables, including fractions and basic operations.
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Show Answer Key & Explanations
Step-by-step solution for: 15 Pre-Algebra 7th Grade Math Worksheets - Free PDF at worksheeto.com
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Show Answer Key & Explanations
Step-by-step solution for: 15 Pre-Algebra 7th Grade Math Worksheets - Free PDF at worksheeto.com
Let's solve each of these linear equations step by step. The goal is to solve for the variable in each equation.
---
$$
\frac{16}{u} + 8 = 10
$$
Step 1: Subtract 8 from both sides:
$$
\frac{16}{u} = 2
$$
Step 2: Multiply both sides by $ u $:
$$
16 = 2u
$$
Step 3: Divide by 2:
$$
u = 8
$$
✔ Answer: $ u = 8 $
---
$$
\frac{48}{y} + 5 = 13
$$
Step 1: Subtract 5:
$$
\frac{48}{y} = 8
$$
Step 2: Multiply both sides by $ y $:
$$
48 = 8y
$$
Step 3: Divide by 8:
$$
y = 6
$$
✔ Answer: $ y = 6 $
---
$$
10 + \frac{20}{a} = 14
$$
Step 1: Subtract 10:
$$
\frac{20}{a} = 4
$$
Step 2: Multiply by $ a $:
$$
20 = 4a
$$
Step 3: Divide by 4:
$$
a = 5
$$
✔ Answer: $ a = 5 $
---
$$
\frac{72}{a} - 8 = 0
$$
Step 1: Add 8:
$$
\frac{72}{a} = 8
$$
Step 2: Multiply by $ a $:
$$
72 = 8a
$$
Step 3: Divide by 8:
$$
a = 9
$$
✔ Answer: $ a = 9 $
---
$$
4 + \frac{10}{a} = 9
$$
Step 1: Subtract 4:
$$
\frac{10}{a} = 5
$$
Step 2: Multiply by $ a $:
$$
10 = 5a
$$
Step 3: Divide by 5:
$$
a = 2
$$
✔ Answer: $ a = 2 $
---
$$
9 + \frac{63}{c} = 16
$$
Step 1: Subtract 9:
$$
\frac{63}{c} = 7
$$
Step 2: Multiply by $ c $:
$$
63 = 7c
$$
Step 3: Divide by 7:
$$
c = 9
$$
✔ Answer: $ c = 9 $
---
$$
7 + \frac{56}{v} = 15
$$
Step 1: Subtract 7:
$$
\frac{56}{v} = 8
$$
Step 2: Multiply by $ v $:
$$
56 = 8v
$$
Step 3: Divide by 8:
$$
v = 7
$$
✔ Answer: $ v = 7 $
---
$$
10 + \frac{24}{x} = 13
$$
Step 1: Subtract 10:
$$
\frac{24}{x} = 3
$$
Step 2: Multiply by $ x $:
$$
24 = 3x
$$
Step 3: Divide by 3:
$$
x = 8
$$
✔ Answer: $ x = 8 $
---
$$
\frac{16}{a} + 4 = 8
$$
Step 1: Subtract 4:
$$
\frac{16}{a} = 4
$$
Step 2: Multiply by $ a $:
$$
16 = 4a
$$
Step 3: Divide by 4:
$$
a = 4
$$
✔ Answer: $ a = 4 $
---
$$
2 + \frac{6}{u} = 8
$$
Step 1: Subtract 2:
$$
\frac{6}{u} = 6
$$
Step 2: Multiply by $ u $:
$$
6 = 6u
$$
Step 3: Divide by 6:
$$
u = 1
$$
✔ Answer: $ u = 1 $
---
$$
7 + \frac{6}{y} = 13
$$
Step 1: Subtract 7:
$$
\frac{6}{y} = 6
$$
Step 2: Multiply by $ y $:
$$
6 = 6y
$$
Step 3: Divide by 6:
$$
y = 1
$$
✔ Answer: $ y = 1 $
---
$$
\frac{12}{x} - 2 = 1
$$
Step 1: Add 2:
$$
\frac{12}{x} = 3
$$
Step 2: Multiply by $ x $:
$$
12 = 3x
$$
Step 3: Divide by 3:
$$
x = 4
$$
✔ Answer: $ x = 4 $
---
$$
2 + \frac{36}{y} = 8
$$
Step 1: Subtract 2:
$$
\frac{36}{y} = 6
$$
Step 2: Multiply by $ y $:
$$
36 = 6y
$$
Step 3: Divide by 6:
$$
y = 6
$$
✔ Answer: $ y = 6 $
---
$$
5 + \frac{20}{u} = 7
$$
Step 1: Subtract 5:
$$
\frac{20}{u} = 2
$$
Step 2: Multiply by $ u $:
$$
20 = 2u
$$
Step 3: Divide by 2:
$$
u = 10
$$
✔ Answer: $ u = 10 $
---
$$
\frac{24}{z} - 2 = 1
$$
Step 1: Add 2:
$$
\frac{24}{z} = 3
$$
Step 2: Multiply by $ z $:
$$
24 = 3z
$$
Step 3: Divide by 3:
$$
z = 8
$$
✔ Answer: $ z = 8 $
---
| Equation | Variable | Solution |
|--------|--------|---------|
| 1 | $ u $ | 8 |
| 2 | $ y $ | 6 |
| 3 | $ a $ | 5 |
| 4 | $ a $ | 9 |
| 5 | $ a $ | 2 |
| 6 | $ c $ | 9 |
| 7 | $ v $ | 7 |
| 8 | $ x $ | 8 |
| 9 | $ a $ | 4 |
| 10 | $ u $ | 1 |
| 11 | $ y $ | 1 |
| 12 | $ x $ | 4 |
| 13 | $ y $ | 6 |
| 14 | $ u $ | 10 |
| 15 | $ z $ | 8 |
> ⚠️ Note: Some variables (like $ a $, $ u $, $ y $) appear multiple times with different values — this is fine because they are independent equations.
Let me know if you'd like this formatted as a printable answer sheet!
---
1.
$$
\frac{16}{u} + 8 = 10
$$
Step 1: Subtract 8 from both sides:
$$
\frac{16}{u} = 2
$$
Step 2: Multiply both sides by $ u $:
$$
16 = 2u
$$
Step 3: Divide by 2:
$$
u = 8
$$
✔ Answer: $ u = 8 $
---
2.
$$
\frac{48}{y} + 5 = 13
$$
Step 1: Subtract 5:
$$
\frac{48}{y} = 8
$$
Step 2: Multiply both sides by $ y $:
$$
48 = 8y
$$
Step 3: Divide by 8:
$$
y = 6
$$
✔ Answer: $ y = 6 $
---
3.
$$
10 + \frac{20}{a} = 14
$$
Step 1: Subtract 10:
$$
\frac{20}{a} = 4
$$
Step 2: Multiply by $ a $:
$$
20 = 4a
$$
Step 3: Divide by 4:
$$
a = 5
$$
✔ Answer: $ a = 5 $
---
4.
$$
\frac{72}{a} - 8 = 0
$$
Step 1: Add 8:
$$
\frac{72}{a} = 8
$$
Step 2: Multiply by $ a $:
$$
72 = 8a
$$
Step 3: Divide by 8:
$$
a = 9
$$
✔ Answer: $ a = 9 $
---
5.
$$
4 + \frac{10}{a} = 9
$$
Step 1: Subtract 4:
$$
\frac{10}{a} = 5
$$
Step 2: Multiply by $ a $:
$$
10 = 5a
$$
Step 3: Divide by 5:
$$
a = 2
$$
✔ Answer: $ a = 2 $
---
6.
$$
9 + \frac{63}{c} = 16
$$
Step 1: Subtract 9:
$$
\frac{63}{c} = 7
$$
Step 2: Multiply by $ c $:
$$
63 = 7c
$$
Step 3: Divide by 7:
$$
c = 9
$$
✔ Answer: $ c = 9 $
---
7.
$$
7 + \frac{56}{v} = 15
$$
Step 1: Subtract 7:
$$
\frac{56}{v} = 8
$$
Step 2: Multiply by $ v $:
$$
56 = 8v
$$
Step 3: Divide by 8:
$$
v = 7
$$
✔ Answer: $ v = 7 $
---
8.
$$
10 + \frac{24}{x} = 13
$$
Step 1: Subtract 10:
$$
\frac{24}{x} = 3
$$
Step 2: Multiply by $ x $:
$$
24 = 3x
$$
Step 3: Divide by 3:
$$
x = 8
$$
✔ Answer: $ x = 8 $
---
9.
$$
\frac{16}{a} + 4 = 8
$$
Step 1: Subtract 4:
$$
\frac{16}{a} = 4
$$
Step 2: Multiply by $ a $:
$$
16 = 4a
$$
Step 3: Divide by 4:
$$
a = 4
$$
✔ Answer: $ a = 4 $
---
10.
$$
2 + \frac{6}{u} = 8
$$
Step 1: Subtract 2:
$$
\frac{6}{u} = 6
$$
Step 2: Multiply by $ u $:
$$
6 = 6u
$$
Step 3: Divide by 6:
$$
u = 1
$$
✔ Answer: $ u = 1 $
---
11.
$$
7 + \frac{6}{y} = 13
$$
Step 1: Subtract 7:
$$
\frac{6}{y} = 6
$$
Step 2: Multiply by $ y $:
$$
6 = 6y
$$
Step 3: Divide by 6:
$$
y = 1
$$
✔ Answer: $ y = 1 $
---
12.
$$
\frac{12}{x} - 2 = 1
$$
Step 1: Add 2:
$$
\frac{12}{x} = 3
$$
Step 2: Multiply by $ x $:
$$
12 = 3x
$$
Step 3: Divide by 3:
$$
x = 4
$$
✔ Answer: $ x = 4 $
---
13.
$$
2 + \frac{36}{y} = 8
$$
Step 1: Subtract 2:
$$
\frac{36}{y} = 6
$$
Step 2: Multiply by $ y $:
$$
36 = 6y
$$
Step 3: Divide by 6:
$$
y = 6
$$
✔ Answer: $ y = 6 $
---
14.
$$
5 + \frac{20}{u} = 7
$$
Step 1: Subtract 5:
$$
\frac{20}{u} = 2
$$
Step 2: Multiply by $ u $:
$$
20 = 2u
$$
Step 3: Divide by 2:
$$
u = 10
$$
✔ Answer: $ u = 10 $
---
15.
$$
\frac{24}{z} - 2 = 1
$$
Step 1: Add 2:
$$
\frac{24}{z} = 3
$$
Step 2: Multiply by $ z $:
$$
24 = 3z
$$
Step 3: Divide by 3:
$$
z = 8
$$
✔ Answer: $ z = 8 $
---
✔ Final Answers Summary:
| Equation | Variable | Solution |
|--------|--------|---------|
| 1 | $ u $ | 8 |
| 2 | $ y $ | 6 |
| 3 | $ a $ | 5 |
| 4 | $ a $ | 9 |
| 5 | $ a $ | 2 |
| 6 | $ c $ | 9 |
| 7 | $ v $ | 7 |
| 8 | $ x $ | 8 |
| 9 | $ a $ | 4 |
| 10 | $ u $ | 1 |
| 11 | $ y $ | 1 |
| 12 | $ x $ | 4 |
| 13 | $ y $ | 6 |
| 14 | $ u $ | 10 |
| 15 | $ z $ | 8 |
> ⚠️ Note: Some variables (like $ a $, $ u $, $ y $) appear multiple times with different values — this is fine because they are independent equations.
Let me know if you'd like this formatted as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of math pre algebra worksheet.