układ równań x/2-y/3+2=0 (x+y)/9+(x-y)/3=x+4

x/2-y/3+2=0 (x+y)/9+(x-y)/3=x+4 x/2-y/3+2=0 /*6 (x+y)/9+(x-y)/3=x+4 /*9 3x-2y+12=0 x+y+3x-3y=9x+36 3x-2y+12=0 -5x-2y=36 /*-1 3x-2y+12=0 5x+2y=-36 8x=-48 /:8 x =-6 5*(-6)+2y=-36 2y=-36+30 2y=-6 y = -3 x = -6 y = -3