Page 615 - Basic College Mathematics with Early Integers

592 C HAPTE R 8 I INTRODUCTION TO ALGEBRA

Objective Solve each equation. See Examples 6 and 7.

25. -21y + 42 = 2 26. -11y + 32 = 10 27. 31x - 12 - 12 = 0

28. 21x + 52 + 8 = 0 29. 35 - 17 = 31x - 22 30. 22 - 42 = 41x - 12

31. 21y - 32 = y - 6 32. 31z + 22 = 5z + 6 33. 2t - 1 = 31t + 72

34. -4 + 3c = 41c + 22 35. 315c + 12 - 12 = 13c + 3 36. 413t + 42 - 20 = 3 + 5t

Mixed Practice (Sections 8.1–8.4) Solve each equation. See Examples 1 through 7.

37. -4x = 44 38. -3x = 51 39. x + 9 = 2

40. y - 6 =-11 41. 8 - b = 13 42. 7 - z = 15

43. 3r + 4 = 19 44. 5m + 1 = 46 45. 2x - 1 =-7

46. 3t - 2 =-11 47. 7 = 4c - 1 48. 9 = 2b - 5

49. 9a + 29 =-7 50. 10 + 4v =-6 51. 0 = 4x + 4

52. 0 = 5y + 5 53. 111x - 22 = 22 54. 51a - 42 = 20

55. -7c + 1 =-20 56. -2b + 5 =-7 57. 31x - 52 =-7 - 11

58. 41x - 22 =-20 - 4 59. -5 + 7k =-13 + 8k 60. -7 + 9d =-17 + 10d

61. 4x + 3 = 2x + 11 62. 6y - 8 = 3y + 7 63. -81n + 22 + 17 =-6n - 5

3 5 2 5
64. -101x + 12 + 2 =-x + 10 65. x + 14 = x - 2 66. x - 9 = x - 15
8 8 7 7

5 1 3
67. 10 + 51z - 22 =-4z + 1 68. 20 + 41w - 52 = 5 - 2w 69. a = a +
8 8 4

4 1 5
70. a = a + 71. 716 + w2 = 61w - 22 72. 615 + c2 = 51c - 42
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73. 3 + 212n - 52 = 1 74. 5 + 413x - 22 = 21 75. 213z - 22 - 215 - 2z2 = 4