Question

Va rog mult!
Dau coroana!​

Answer 1

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.