m-[n-3m-(m-n)]=?

m-[n-3m-(m-n)]=? (m-n)^3(n-m)^2(m-n)=_____ m/n=7/3则m+n/m-n (3m-n)(m-2n)=() n=m/M 已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2= 已知m/n=5/3,求m/(m+n)+m/(m-n)-n平方/(m平方-n平方) 已知m/n=5、,求（m/（m+n）)+(m/(m-n))-(n^2/(m^3-n^2)) m/n=5/3,求（m/m+n）+（m/m+n)-（n^2/m^2-n^2) 已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=? |m-n|=n-m,且|m|=4,|n|=3,则m+n=? 2m+3n+2m+3n+m+2m+3n+n=______ (m-2n)(2n+m)-(-3m-4n)(4n-3m)= 集合M={m｜m=3^n+6n-1,n∈N+,且m 已知n/m=3/5,求m+n/m (m-2n/n-m)-(n/m-n)= |m-n|=n-m,且|m|=4,|n|=3,求（m+n)*(m+n)的值 .4（m+n)^2*（m+n)^3-7（m+n)（m+n)^4+5（m+n)^5=