Combining Like Terms

What is/are the coefficient(s) of
 2x + 9 + 7x?

• 2, 9, 7
• 2, 7
• 2x, 7x
• 9

What is/are the constant(s) of 2x + 9 + 7x?

• 2, 9, 7
• 2, 7
• 2x, 7x
• 9

Simplify this expression: 6h + 3r + 2h

• 11
• 8h + 3
• 8h + 3r
• 8 + 3r

Simplify the expression: 6 + 5n + 7n - 2

• 20n
• 8 + 12n
• 12n - 4
• 12n + 4

 Are x2 and 2x like terms?

• Yes
• No

Are 10y and y like terms?

• Yes
• No

Are 20x and 20 like terms?

• yes
• no

Simplify: 12x - 24 + 2x

• 14x - 8
• 22
• 14x - 24
• 14x + 24

Simplify: 10k + 3 + 8k² + 7 - 5k²

• 10k + 10 + 3k²
• 10k + 3
• 13k
• 10k - 10 + 13k²

Is 5(2n + 4) = 10n + 20?

• Yes
• No