Question

Resuelve por el método de sustitución

Answer 1

X-y=3
1/3 x+y=-2

X/3+3y/3=-6/3
X+3y=-6

X-y=3
X+3y=-6

X=3+y

(3+y)+3y=-6
3+y+3y=-6
Y+3y=-6-3
4y=-9
Y=-9/4

X=3+y
X=3-9/4
X=12/4-9/4
X=3/4

X=3/4
Y=-9/4