Question

How do you find the sum or difference of `(2x-2y+1)-(3y+4x)`?

Answer 1

`-2x - 5y + 1`

Explanation:

Step 1) Expand the terms in parenthesis remember to use the correct sign across the entire term in the parenthesis:

`2x - 2y + 1 - 3y - 4x`

Step 2) Group like terms and simplify:

`(2x - 4x) - (2y + 3y) + 1`

`(2-4)x - (2+3)y + 1`

`-2x - 5y + 1`