Combine like terms: -2x - 4y + 5x - 7y = 3x - 11y -2x + 5x = 3x -4y + -7y = -11y
4y-7y = -3
2x + 3y = 17 3x + 4y = 24 (2x + 3x) + (3y + 4y) = (17 + 24) 5x + 7y = 41
3x + 7y
6x plus 4y
4x+7y
8y - 38
9x + 3y + 5z - 5x + 4z - 7y = 4x - 4y + 9z
10x+2x-3y-4y=12x-7y
10x - 3y + 2x - 4y =(10x + 2x) + (-3y - 4y) =12x - 7y
4y + 3 = 7y - 18Add 18 to each side of the equation:4y + 21 = 7ySubtract 4y from each side:21 = 3yDivide each side by 3:7 = y
(4y - 1)(y + 2)