Solving One-Variable Equations

Solve the following equation:

8x + 4 = 3x + 14

Solve the following equation:

x + 18 = 20

• x = 2

• x = -2

• x = 22

• x = 38

Solve the following equation:

x - 4 = 8

Solve the following equation:

4x + 15 = 31

Kylie and Ricardo decide to start a dog watching business for their neighborhood. Kylie thinks it would be best to charge customers $27 for a membership and then $5 per time they walk a dog. Ricardo thinks it would be best to charge $8 per dog walk. For what number of walks will their two plans cost the same amount of money?

Mathematical Equivalence

ON

Solve the following equation:

2(3x + 1) = 26

Solve the following equation:

7x + 8 - 2x = 20

Solve the following equation:

0.5(2x + 14) = 10

• x = 3

• x = 17

• x = -2.25

• x = - 4

Solve the following equation:

-3x = 9

• x = 3

• x = 12

• x = -3

• x = 6

• x = 3

• x = -7

• x = 7

• x = -3