Solving Equations Basics

Solve for the variable. 3x=-27

• x=9

• x=-30

• x=-9

• x=-24

Solve: 3(x-4) = -3

• 3

• -3

• 5

• -5

Solve for x:
8x - 10 = -34

• 4

• 3

• -3

• -24

What is the first step in solving this equation:
5x + 7 = 12

• Divide by 5

• Subtract 5

• Multiply by 7

• Subtract 7

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 equation:
-5x = 25

• x = 20

• x = -20

• x = -5

• x = 5

Find the solution:
10 = 4x - 2

• x = 3

• x = 2

• x = -3

• x = -2

3(x - 2) = 18

• 6.7

• 4

• 8

• -4

• none of the above

4x + 7 = 23

• x = 16

• x = 4

• x = 9

• x = 12

Solve:

3(x - 2) = 18

• 6.7

• 4

• 8

• -4

• none of the above