24x-32y-8z=0(24x-32y-8z)-(2x+y-8z)=22x-33yy=2x/3;8x+4y-32z=08x+4y-32z+3x-4y-z=11x-33z=0z=x/3x=3zy=2z(x2+y2-z2)/(xy+yz)=(3*3+2*2-1*1)/(3*2+2*1)=3/2
