Page 156 - Math Course 1 (Book 1)

Equations with Variables

Skill Practice!

Solve each equation. Check your solution.
1. 3x + 2 = 5x 6. n - 12 = 3n

2. 2 - 3b = 7b + 12 7. 4d - 11 = 2d + 7

3. 2f + 3 = 11f - 24 8. 8y + 11 = 2y + 29

4. 5a = 45 + 2a 9. 17 - 3c = 4c + 3

5. 2a -3 = 9a - 10 10. 5b = 21 + 4b

Def ne a variable and write an equation to f nd each number. Then solve.

11. Three times a number equals 40 more than f ve times the number. What is the number?

12. A number equals four less than three times the number. What is the number?

13. Eight times a number equals 24 more than two times the number. What is the number?

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