Solving Equations for Variable

-4x + 1 =21

• x=30

• x=120

• x=5

• x= -5

Solve for v:

8v - v + 8 = 22

• v = 4

• v = 2

• v = 10

• v = -4

Solve:
3(x - 2) = 18

• 6.7

• 4

• 8

• -4

Solve for x:

2x - 3 + 4x = 27

• 12

• 4

• 5

• 15

Mathematical Equivalence

ON

Solve for x:

10x + 9 = 4x - 9

• x = 0

• x = 3

• x = -3

• x = -18

Solve for c:

2c - 12 = 9c + 2

• 14

• 2

• -2

2x = -16

• -8

• 8

When dividing by -3 on both sides, will your answer be positive or negative?

-3x = -18

• Your answer will be positive

• Your answer will be negative

In the equation x + 7 = 12 7 is being added to the variable x. How should you show your work to isolate the variable and solve the equation?

• Add 7 to both sides. Solution is x=19.

• Subtract 7 to both sides. The solution is x=5.

• Multiply both sides by 7. The solution is x = 84.

• Subtract 12 on both sides. The solution is x=-5.