x/5=6y 则x/y=
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(5x-6y)(x+y)=0(x不等于y),则y/x=
若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y=
x+y/y=5/4,则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
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
x/5=6y 则x/y=
已知x/5=y/3,则(x/x+y)+(y/x-y)-(yxy/xxx-yxy)
若5x-4y=6,4x-5y=8,则x+y=( ),x-y=( )
若5x+3y=3x+4y=x+2y+6,则x+y=___
已知(x+5)+|y*y+y-6|=0,则y*y-5分之一xy+x*x+x*x*x=
已知x+2y=5 2x+y=6 则x-y=
已知x*x+4x+y*y-2y+5=0,则x*x+y*y=?
已知x+y=6,x-y=5,则x^2-y^2等于多少
(x-y-5)^2+|x+6y+2|=0,则x-y^2=
已知|5x-y-8|+(7y-x+2)=0则4x+6y