Page 614 - Basic College Mathematics with Early Integers

Vocabulary and Readiness Check

Use the choices below to fill in each blank. Some choices may be used more than once.

addition multiplication combine like terms
5(2x + 6) - 1 = 39 3x - 9 + x - 16 distributive

1. An example of an expression is while an example of an equation is .
x
2. To solve =-10 , we use the property of equality.
-7
3. To solve x - 7 =-10 , we use the property of equality.

Use the order of the Steps for Solving an Equation in this section to answer Exercises 4 through 6.
4. To solve 9x - 6x = 10 + 6 , first .
5. To solve 5(x - 1) = 25 , first use the property.
6. To solve 4x + 3 = 19 , first use the property of equality.

8.4 Exercise Set FOR EXTRA HELP

Objective Solve each equation. See Examples 1 through 5.

1. 2x - 6 = 0 2. 3y - 12 = 0 3. 3n + 3.6 = 9.3 4. 4z + 0.8 = 5.2

2 3
5. 6 - n = 10 6. 7 - y = 9 7. - x + 19 =-21 8. - y - 14 = 7
5 7

9. 1.7 = 2y + 9.5 10. -5.1 = 3x + 2.4 11. 2n + 8 = 0 12. 8w + 40 = 0

13. 3x - 7 = 4x + 5 14. 7x - 1 = 8x + 4 15. 10x + 15 = 6x + 3 16. 5x - 3 = 2x - 18

17. 9 - 3x = 14 + 2x 18. 4 - 7m =-3m + 4 19. -1.4x - 2 =-1.2x + 7

20. 5.7y + 14 = 5.4y - 10 21. x + 20 + 2x =-10 - 2x - 15 22. 2x + 10 + 3x =-12 - x - 20

23. 40 + 4y - 16 = 13y - 12 - 3y 24. 19x - 2 - 7x = 31 + 6x - 15

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