Question

{2(y-3x)-1=y/2-x to wszystko w klamerce
y/4-0,20=-0,05

Answer 1

{2(y-3x)-1=y/2-x
{y/4-0,20=-0,05

{2y-6x-1=y/2-x => 2y-y/2-6x+x-1=0 => 3y/2-5x-1=0
{y/4-0,20=-0,05 => y/4=-0,05+0,2 => y/4=0,15 => y=0,6

{3*0,6/2-5x-1=0 =>0,9-5x-1=0 => -5x=0,1=> x=-0,02
{y=0,6

Odp. x=-0,02, y=0,6