Extra Credit Review for Algebra and Area Test

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? 

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

• Add 7 to both sides.
  The solution is x = 19.

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

The variable, k, is being divided by 11. How should you show your work to isolate the variable?

• Divide both sides by 11

• Multiply both sides by 11.

• Add 11 to both sides.

• Subtract 11 to both sides.

Solve the equation:
20.5 = x + 4

• 16.5

• 16.05

• 24.5

• 24.05

y/3=12

• 36

• -36

• 4

• -4

y - 33 = 147

• y = 114

• y = 177

• y = 180

• Answer not Given

Solve the equation:
0 = 4h

• h = 4

• g = 1

• g = -4

• g = 0

Which equation has w = 8 as the solution?

• 8w= 64

• 16w = 240

• 16 - w = 9

• 4 + w = 10

What is the first step in solving the following equation?
3x - 5 = 20

• multiply both sides by 5

• add 5 to both sides

• divide both sides by 5

• subtract both sides by 5

6 = a/4 + 2

• 16

• 15

• 14

11b+7=40

• 2

• 1

• 4

• 3