Solving Math Equations

Solve  3x - 7 = 32

• 13

• -13

• 12

• -12

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5

• Add 6 to both sides and multiply both sides by 5

• Subtract 6 from both sides then multiply both sides by 5

• Subtract 6 from both sides then divide both sides by 5

3x - 5 = -26

• x=-21

• x=21

• x=-7

• x=61

Solve for k:
3k + 5 = 23

• k = 4

• k = 5

• k = 6

• k = 7

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

What is the result of solving for the variable?

-2x = 6

• x = -12

• x = 3

• x = -3

• x = 12

3(x - 2) = 18

• 6.7

• 4

• 8

• -4

• none of the above

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