Question

Ecuacion x+3y=-1 y=x+1

Answer 1

X+3y=-1y=x+
(x+3y=x+1
-1y=x+1
(y=1/3
-x-y=1
X= -4/3

- 4/3+3x 1/3=-1x 1/3=-4/3+1
-1/3=-1/3=1/3
(x,y)=(-4/3,1/3)