One-Step Equations

Solve:

y + 9 = -10

• 1

• -1

• 19

• -19

Solve:

11 = x - 7

• 4

• -4

• 18

• -18

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.

Solve the equation:
20.5 = x + 4

• 16.5
• 16.05
• 24.5
• 24.05

y - 33 = 147

• y = 114
• y = 177
• y = 180
• Answer not Given

What what is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

5 less than a number is 15.

• x - 5 = 15
• 5 - x = 15
• 15 - x = 5

What does "difference" mean?

• add
• subtract 
• multiply
• divide

Solve the equation: 
x + 7 = 12

• x = 5
• x = 19
• x = -5
• x = 84

Solve the equation:
x - 4 = -3

• x = -7
• x = 1
• x = 12
• x = -12