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

##### 1 Answer
Nov 7, 2016

$- 2 x - 5 y + 1$

#### Explanation:

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

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

Step 2) Group like terms and simplify:

$\left(2 x - 4 x\right) - \left(2 y + 3 y\right) + 1$

$\left(2 - 4\right) x - \left(2 + 3\right) y + 1$

$- 2 x - 5 y + 1$