Răspuns:
{2x-8y+6x-15y=3x-33 =>{8x-23y-3x=-33
{-5y-5x+4x-4=3x+3-4 =>{-5y-x-y-3x=-1
{5x=-33+23y=>{x=(-33+23y)/5
{-6y-4x=-1. =>{-6y-4((-33+23y)/5)=-1
{x=(-33+23y)/5 =>{x=172/62
{-6y-(132-92y)/5=-1 =>{y=127/62.
