Math Solve for - 3x - 3y = - 15 and - 3x + y = 5 Asked by AnneS2 on 14 Jul 08:56 Last updated by anonymous on 15 Jul 13:17
- 3x + y = 5 - 3x +3x+ y = 5+3x y = 5+3x - 3x - 3y = - 15 - 3x - 3(5+3x) = - 15 - 3x - 3(5) (-3)(+3x) = - 15 - 3x - 15-9x= - 15 - 15-12x= - 15 - 15+15-12x= - 15+15 -12x=0 -12x/-12=0/-12 x=0 y = 5+3x y = 5+3(0) y=5+0=5