x+y=5,2y-3(x+y)=-11x=5-y;2y-3(5-y+y)=-11;2y-15=-11;2y=4;y=2x=2;y=3.(3x+1)/5-(3y+2)/4=0,(2x-1)/5+(3y-2)/4=24(3x+1)-5(3y+2)=0,4(2x-1)+5(3y-2)=4012x-15y=6,8x+15y=54y=2x=3
