quiz 1: solving equations

Six times the sum of a number and twelve is forty. Which equation represents this?

6(N + 12) = 40

Solve for x. 3x - 1 = 20

7

Which of the following represents "eight times the difference of a number and three is sixty-four"?

8(N - 3) = 64

Eight less than a number is seventy-five. What is the number?

83

Which equation represents "the sum of eight times a number and seven is twice the number"?

8N + 7 = 2N

The sum of eight and a number is one hundred. What is the number?

92

Solve for x. x - 10 = -30

x = -20

Solve for x. x/7 = -3

x = -21

Solve for x. 5x = -123

x = -24 3/5

Solve for x. -x + 4 = 32

x = -28

Solve for x. 5x = -25

x = -5

Solve for x. 7x/3 + 2 = -15

x = -51/7

Solve for x. 3x/2 = 15

x = 10

Solve for x. 7x = 78

x = 11 1/7

Solve for x. -10x = -210

x = 21

Solve for x. 3x/4 + 3 = 27

x = 32

Solve for x. -8x = -48

x = 6

Solve for x. 5x/7 - 5 = 50

x = 77

x - 8 = -20

-12

x/5= 20

100