Question

Simplify -3x + 7y + 21y - 12x
O 9x + 28y
0 -9x + 28y
0 4x - sy
0 -15x + 28y

Answer 1

D. -15x + 28y

Explanation:

- 3x + 7y + 21y - 12x

Move the equation

- 3x - 12x + 7y + 21y

Combine - 3x and - 12x

- 15x + 7y + 21y

Combine 7y and 21y

-15x + 28y

Because you cannot simplify this equation any further, that is your answer

I hope that this helps! :)

Answer 2

-15x+28y

Explanation:

combine like terms!!