10(y+2)+3(x-5)=x-5 25(y+2)+3(x-5)=-10 to jest uklad rownan

10(y+2)+3(x-5)=x-5 25(y+2)+3(x-5)=-10 10y+20+3x-15+5=x 25y+50+3x-15=-10 10y+2x=-10 /*3 25y+3x=-45 /*(-2) 30y+6x=-30 -50y-6x=90 30y+6x-6x-50y=90-30 -20y=60 y=3 10*3+2x=-10 y=3 30+2x=-10 y=3 2x=-40 y=3 x=-20

10y+20+3x-15=x-5 25y+50+3x-15=-10 10y+3x-x=-5+15-20 10y+2x=-10 25y+3x=-10+15-5 10y+2x=-10/*3 25y+3x=0/*-2 30y+6x-30 -50x-6x=0 20y=-30//-20 y=1,5 z rownania (10obliczam x 10y+2x=-10 10*1,5+2x=-10 15+2x=-10 2x=-10-15 2x=-25//2 x=12,5