若10.5x-10=36-3y=14+A,则x=( ),y=( )
若10.5x -10 = 36-3y=14+A,x=?y=?
若10.5x-10=36-3y=14+A,则x=( ),y=( )
若3x=7y,则y分之x= ,x:(x:y)=
若3x=7y,则y比x= ,x:(x+y)=
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m,
若10.5x-10=36-3y=14+A,求x和y的值
若x和y互为相反数,则3x-10+3y+y/5x=
若{x+3y+10z=0 则 (x+y-z)/(x-y+z)
已知3x+2y=a,2x+3y=b,则(x+y)(x-y)=?
3a(x+y)-2b(x+y)=(x+y)(?)