Question

a) x - y = -1, x + 2y = 0, 3x + y = -1 .​

Answer 1

A) x-y=-1

x-y+=-1+1

x-y+1=0

B)x+2y=0

2y=-x

y=-1/2x

y=-0,5x

C)3x+y=-1

3x+y+1=-1+1

3x+y+1=0

Saludo Ricardo