Page 598 - Basic College Mathematics with Early Integers

S E C T I O N 8.2 I SOLVING EQUATIONS: THE ADDITION PROPERTY 575

1 4 3 5 5 11
18. x + = 19. y - =- 20. y - =-
3 3 4 8 6 12

21. x - 3 =-1 + 4 22. y - 8 =-5 - 1 23. -7 + 10 = m - 5

24. 1 - 8 = n + 2 25. x - 0.6 = 4.7 26. y - 1.2 = 7.5

27. -2 - 3 =-4 + x 28. 7 - 1-102 = x - 5

29. y + 2.3 =-9.2 - 8.6 30. x + 4.7 =-7.5 - 3.4

31. -8x + 4 + 9x =-1 + 7 32. 3x - 2x + 5 = 5 - 2

33. 5 + 1-122 = 5x - 7 - 4x 34. 11 + 1-152 = 6x - 4 - 5x

35. 7x + 14 - 6x =-4 + 1-102 36. -10x + 11x + 5 =-9 + 1-52

Solve. First multiply to remove parentheses. See Example 8.

37. 2(5x - 3) = 11x 38. 6(3x + 1) = 19x 39. 3y = 2(y + 12)

40. 17x = 4(4x - 6) 41. 21y = 5(4y - 6) 42. 28z = 9(3z - 2)

43. -3(-4 - 2z) = 7z 44. -2(-1 - 3y) = 7y

Review

Perform each indicated operation. See Section 3.3.

-7 4.2 1
45. 46. 47. # 3
-7 4.2 3

1 2 3 7 2
48. # 5 49. - # - 50. - # -
5 3 2 2 7