Respuesta :

wikk
A+B-C
A = 6x - 2y
B = -4x - 8y
C = -3x + 9y

(
6x - 2y) + (-4x - 8y) - (-3x + 9y)
(6x - 2y) + (-4x - 8y) + (3x - 9y)
2x -10y + (3x - 9y)

5x - 19y