Question

Which expression is equivalent to (–2y – x) – (5y – 9x)?

Answer 1

`8x-7`

Explanation:

`(-2y - x) - (5y - 9x)`

Distribute the negative sign.

`(-2y - x)-5y+9x`

`-2y - x-5y+9x`

`-2y -5y+9x- x`

Add or subtract like terms.

`-7y+8x`

Answer 2

8x-7y

Explanation:

(–2y – x) – (5y – 9x)

Distribute the minus sign

-2y -x -5y +9x

Combine like terms

-x +9x - 2y -5y

8x-7y