Equations Review

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

What is the solution for x + 9 = 21

• 10
• 12
• 11
• 13

Solve for b
2b = -16

• 8
• 4
• -8
• 3

• x = 20
• x = 7
• x = 10
• x = 3

x - 8 = -5 

• 13
• -13
• 3
• -3