Page 634 - Basic College Mathematics with Early Integers

CHAPTER 8 REVIEW 611

51. 2x + 7 = 6x - 1 52. 5x - 18 =-4x + 36

53. 51n - 32 = 7 + 3n 54. 712 + x2 = 4x - 1

55. 214n - 112 + 8 = 5n + 4 56. 315x - 62 + 9 = 13x + 7

Write each sentence as an equation.

57. The difference of 20 and -8 is 28. 58. Nineteen subtracted from -2 amounts to -21.

59. The quotient of -75 and the sum of 5 and 20 is equal 60. The product of -5 and the sum of -2 and 6 yields -20.
to -3.

(8.5) Write each phrase as an algebraic expression. Use x to represent “a number.”

61. The quotient of 70 and a number 62. The difference of a number and 13

63. A number subtracted from 85 64. Eleven added to twice a number

Write each sentence as an equation. Use x to represent “a number.”

65. A number increased by 8 is 40. 66. Twelve subtracted from twice a number is 10.

Solve.

67. Five times a number subtracted from 40 is the same 68. The product of a number and 3 is twice the differ-
as three times the number. Find the number. ence of that number and 8. Find the number.