x+y=16 5x-6y=33

6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5 x+y=5; x^y+y^x=17 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 5(X-3Y)-6=2X+1,3(X+Y)=4(2X-Y)+16 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= 3x+4y=16;5x-6y=33 3x+4y=16 5x-6y=33 求解~!详细步骤~!~谢谢!~ 求方程组{3x+4y=16,5x-6y=33的解 解方程组3x+4y=16 5x-6y=33 3x+4y=16 5x-6y=33 3x+4y=16 5x-6y=33 这么做?