6X+5y=100 x=?y=?

(x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5 {6(x-y)-7(x+y)=21 {2(x-y)-5(x+y)=-1 x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5 （5x-6y)(x+y)=0(x不等于y),则y/x= x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 （x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y 已知:3x-5y=0,求x/y,x-y/y,x-y/x 6X+5y=100 x=?y=? 化简 x / y(x+y) - y / x(x+y) = 6x+5y+3z=100 x+y+z=30 求 x y 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) 若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y＝ x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空 (X-Y)(X+Y)=5 能解么 5x-4y(y-x)=? 1:4(x-100)+3y=5 2:6(x-y)-2(x+y )=14 x-100=-y 3(x-y)+(x+y)=5 先无视上面的1.4(x-100)+3y=5x-100=-y2.6(x-y)-2(x+y )=143(x-y)+(x+y)=5