Объяснение:
{x-y = -2 {y=x+2 {y=x+2 {y=3
{3x + y = 6 == > {3x+x+2=6 == > {4x=4 == > {x=1
ili
{y=x+2
{y=-3x+6
x+2=-3x+6
4x=4
x=1
y=x+2
y=1+2=3
y=3
Объяснение:
{x-y = -2 {y=x+2 {y=x+2 {y=3
{3x + y = 6 == > {3x+x+2=6 == > {4x=4 == > {x=1
ili
{y=x+2
{y=-3x+6
x+2=-3x+6
4x=4
x=1
y=x+2
y=1+2=3
y=3