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To undo an operation, you must do its opposite or inverse to both sides of the equation. Match each operation to its inverse.

• Addition

• Subtraction

• Division

• Division

• Subtraction

• Multiplication

• Multiplication

• Addition

To solve a two-step equation, first you undo any​ (a)   or ​ (b)   . Then you undo any ​ (c)   or ​ (d)   .

• addition
• subtraction
• multiplication
• division

What is the first step you should do to solve this equation?

• Add 31 to both sides

• Subtract 31 from both sides

• Subtract 5 from both sides

• Divide by -6 on both sides

What is the first step you should do to solve this equation?

• Multiply by -3 on both sides.

• Subtract 33 from both sides

• Subtract 19 from both sides

• Divide by -3 on both sides

What is the first step you should do to solve this equation?

• Multiply by 10 on both sides.

• Subtract 18 from both sides

• Subtract 28 from both sides

• Divide by 10 on both sides

What is the first step you should do to solve this equation?

• Multiply by 11 on both sides.

• Subtract 11 from both sides

• Add 11 to both sides

• Divide by 11 on both sides

What is the last step you should do to solve this equation?

• Add 6 to both sides

• Divide both sides by -6

• Divide both sides by 36

• Multiply both sides by -6

What is the last step you should do to solve this equation?

• Add 3 to both sides

• Multiply both sides by 14

• Divide both sides by -3

• Multiply both sides by -3

What is the last step you should do to solve this equation?

• Add 10 to both sides

• Multiply both sides by 10

• Divide both sides by 10

• Multiply both sides by -18

What is the last step you should do to solve this equation?

• Add 11 to both sides

• Multiply both sides by 11

• Divide both sides by -11

• Multiply both sides by -11