Expressions & Equations Review

Solve: 50 = -2.5x

• x = 20

• x = -125

• x = -20

• x = 47.5

Simplify the following expression:

-2x + 11 + 6x

• 8x + 11

• 4x + 11

• 4x

• 15x

Use the Distributive Property.

5(a + 6)

• 5a + 6

• a + 30

• 5a + 30

• 5a - 30

Use the Distributive Property.

4(-p - 6)

• 4p - 24

• 4p + 24

• -4p + 24

• -4p - 24

Simplify the following expression:

19 - (3 - 5b)

• 16 + 5b

• 21 + 5b

• 16 - 5b

• 21 - 5b

Simplify the following expression:

5d - 7 - d + 4

• 6d + 11

• 6d - 3

• 4d + 11

• 4d - 3

x - 62 = 123

How should you show your work to isolate the variable and solve the equation.

• Add 62 to each side.

• Subtract 62 from each side.

• Multiply each side by 62.

• Add 123 to each side.

What is the inverse operation of division?

• Division

• Multiplication

• Subtraction

• Addition

What is the correct step to solve for the variable?

15 = m - 5

• subtract 15 from both sides

• add 15 to both sides

• subtract 5 from both sides

• add 5 to both sides

16 = k/-11

The variable, k, is being divided by -11. How should you isolate the variable?

• Add 11 to both sides

• Divide both sides by -11

• Multiply both sides by -11

• Subtract 11 from both sides