Adding Monomials Subtracting Monomials

-20x⁶ + (-10x⁶)

• 10x¹²

• -30x⁶

• -10x⁶

• -30x¹²

2x² + 3y - 2x + 5y + 2x

• 2x² + 8y

• 2x + 8y

• 2x + 5y

• 2x² + 4x + 8y

10m²n + 7mn² - m²n

• 9m²n + 7mn²

• 16m²n

• 17m²n - mn²

• No change

Find the sum of 16y² and -5y².

• -11y²

• 21y²

• 11y²

• 16y² - 5y²

Subtract 9a from -15a.

• -6a

• -24a

• 24a

• 6a

Subtract 9a from -16a.

• -25a

• -7a

• 25a

• 7a

Simplify: 2x² + 3y - 2x + 5y + 2x

• 2x² + 8y

• 2x + 8y

• 2x + 5y

• 2x² + 4x + 8y

Subtract -2x from -8x

Simplify the following expression
3x + 2y + 5 - 2x + 3y

• 5x + 5y

• 5x + 5y + 5

• x + 5y + 5

• 3x + 2y

Simplify the expression: 2x + 1 + 7x 

• 10x

• 10

• 9x + 1

• 9 + 1x