Answer:
3x + 2y + 5
Explanation:
-3 - 5x - 5y + 8x + 7y + 8
(first, let's group the like terms)
= - 5x + 8x - 5y + 7y - 3 + 8
(now, add the numbers that do not have a variable, - 3 + 8)
= - 5x + 8x - 5y + 7y + 5
(add the elements you think are alike)
= 3x + 2y + 5