Question

Пожалуйста дам 20 баллов

Answer 1

{x+4y-3(x-2y)=0
{3(x+7y)+2(x+y)=4.
{x+4y-3x+6y=0
{3x+21y+2x+2y=4.
{10y=2x
{5x+23y=4.
{y=x/5
{5x+23y=4
5x+23x/5=4
5x=4-4.6
5x=-0.6
x= -0.12
y= -0.12/5
y=-0.024
(-0.12;-0.024)