1. 8 + 35/w = 15
- Subtract 8 from both sides: 35/w = 7
- Multiply both sides by w: 35 = 7w
- Divide both sides by 7: w = 5
- Answer: d. 5
2. 5 = s/8 - 3
- Add 3 to both sides: 8 = s/8
- Multiply both sides by 8: s = 64
- Answer: c. 64
3. 6 = 27/n - 3
- Add 3 to both sides: 9 = 27/n
- Multiply both sides by n: 9n = 27
- Divide both sides by 9: n = 3
- Answer: b. 3
4. 11 + 72/z = 20
- Subtract 11 from both sides: 72/z = 9
- Multiply both sides by z: 72 = 9z
- Divide both sides by 9: z = 8
- Answer: d. 8
5. 10 = s/7 - 1
- Add 1 to both sides: 11 = s/7
- Multiply both sides by 7: s = 77
- Answer: c. 77
6. 5y - 15 = 60
- Add 15 to both sides: 5y = 75
- Divide both sides by 5: y = 15
- Answer: d. 15
7. 101 = 5 + 4x
- Subtract 5 from both sides: 96 = 4x
- Divide both sides by 4: x = 24
- Answer: b. 24
8. 87/y - 10 = 19
- Add 10 to both sides: 87/y = 29
- Multiply both sides by y: 87 = 29y
- Divide both sides by 29: y = 3
- Answer: b. 3
9. 66 + n - 17 = 76
- Simplify: 49 + n = 76
- Subtract 49 from both sides: n = 27
- Answer: d. 27
10. 3 + 50/s = 28
- Subtract 3 from both sides: 50/s = 25
- Multiply both sides by s: 50 = 25s
- Divide both sides by 25: s = 2
- Answer: c. 2
Parent Tip: Review the logic above to help your child master the concept of prealgebra review worksheet.