Distributive Property and Combining Like Terms

Simplify the following expression:
-7x - 9x

• 63x²

• -16x²

• -16x

• -15x

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Find the difference by first distributing then combining

• 15.6t - 1

• -9.6t - 1

• 15.6t + 15

• -9.6t + 15

Simplify the Expression:

7x² - 3a +20 - 4x² + 2a

• 11x² - a + 20

• 3x² - a + 20

• 2a + 20

• 3x² - a

Identify the property shown.

• Commutative

• Associative

• Distributive

• None

Which of these is the correct use of the distributive property for the following expression?
5(2x - 8)

• 10x - 8

• 10x + 40

• 7x - 3

• 10x - 40

Simplify the expression:

12(3 + m)− 5m

• 36 + m

• 15 + 6m

• 36 + 12m - m

• 36 + 7m

Simplify the expression: 7v + 2 + 12 + 2v

• 23

• 23v

• 9 + 14v

• 9v + 14

Simplify    
5(2 - 7n)

• 52 - 7n

• 10 - 7n

• 10 - 35n

• 10 + 35n

Combine Like Terms. 
10u - 5u + 4

• 9u

• 5u + 4

• 50u + 4

• 19u