Combining Like Terms Activity

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

• 2, 9, 7
• 2, 7
• 2x, 7x
• 9

Which of these are like terms in the following expression:
3x + 7 - 9x + 24y + 2x²

• 7, 24y
• 3x, 9x
• 3x, -9x
• 3x, -9x, 2x²

Simplify by combining like terms:

3x-5x

• 2x

• 8x

• -2x

• 15x²

Rewrite the expression by combining like terms.
4x² – 2x² + 2y + 6y² – y + x²

• 3x² + 3xy + 6y
• 6y² + 2xy + 2x
• 7x² + 35x
• 3x² + 6y² + y

Simplify by combining like terms:

-6k + 7k

• k

• -k

• 12k

• -12k

Simplify by combining like terms:

-r -10r

• 11r

• -11r

• 9r

• -11