Question

add 3x-5y+7;2x-y+5 and 3x+2y-8
Please Solve my question quickly​

Answer 1

$3x - 5y + 7 + (2x - y + 5) + (3x + 2y - 8) \\ = 3x - 5y + 7 + 2x - y + 5+ 3x + 2y - 8\\ = 3x + 2x + 3x - 5y - y + 2y + 7 + 5 - 8 \\ = 8x - 6y + 2y + 12 - 8 \\ = 8x - 4y + 4$