m-n=2,m-2n=3求m,n
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
已知|2m-n/m+2n|=3,求2(2m-n)/m+2n-2m-n/m+2n-3的值
若2m-n/m+2n=5,求3(2m-n)/m+2n-m+2n/2m-n+3的值
诺2m-n/m+2n=5,求3(2m-n)/m+2n-m+2n/2m-n+3的值
已知m-2n/2m+n=5,求代数式3(m-2n)/2m+n-15(2m+n)/m-2n-2
如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少
当m-n/m+n=3时,求代数式(3m+3n/m-n)-(m-n/m+n)^2的值为多少?
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
已知:m*m=n+2,n*n=m+2.求m*m*m-2mn+n*n*n(m不等于n).
m,n,(2m-1)/n,(2n-1)/m为正整数,m,n>=2.求m,n
若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n
m+2n=2,3m+4n=8,求m+n=几