Solve Linear Equation

Solve for x if x + 5 = 9

• x = 5

• x = 4

• x = 15

• x = -14

What is the value of x if x - 6 = 5

• x = 11

• x = 1

• x = 2

• x = 30

Solve 10 = 7 - x for x.

• x = -17

• x = -3

• x = 3

• x = 17

Solve 10 = 7 + x for x.

• x = -17

• x = -3

• x = 3

• x = 17

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,
x + 7 = 28

• x = 35

• x = 4

• x = 196

• x = 21

Solve x - 7 = 8 for x.

• -15

• -1

• 1

• 15

Solve x - 5 = - 3 for x.

• -8

• -2

• 2

• 8

19  + a  =  -50

• a = -950

• a =  -69

• a = -31

• a = -50/19

Solve the following equation,

x - 23 = 17

• x = -6

• x = 6

• x = 40

• x = -40