4.20 Solving One-Step Equations with Substitution

What value of n makes the equation true?

9n = 27

• 3

• 18

• 30

• 243

What value of n makes the equation below true?

n – 5 = 22

• 17

• 12

• 110

• 27

What value of b makes the equation true?

 $\frac{72}{b}$  = 8

• 12

• 80

• 9

• 8

What value of x makes the equation below true?

x + 12 = 20

• 32

• 54

• 8

• 3

What is the value of b?

6b = 30

• 36

• 24

• 180

• 5

• 20

• 7

• 10

• 3

What value of z makes the equation true?

45 + z = 92

• 54

• 137

• 47

• 18

Solve the equation below:

0.3r = 2.1

• r = 0.7

• r = 1.8

• r = 7

• r = 18

What value of m makes the equation true?

9.2 - m = 3.2

• 6

• 15.2

• .34

• 5

Which equation has the solution x = 3?

• 2x - 5 = 15

• 4x - 3 = 12

• 3x + 2 = 11

• 5x + 1 = 10