{3m-4n=79m-10n+25=03x-52=6x+42=-153p=582p-38=19s-13t+12=0s=2-3t3y-2=55y+22=25*2

m-[n-3m-(m-n)]=? 已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2= |m-n|=n-m,且|m|=4,|n|=3,则m+n=? (m-2n)(2n+m)-(-3m-4n)(4n-3m)= 已知m²+n²=10,m*n=4,则代数式-m^3n-n^3m= 二元一次方程组,3m-4n=79m-10n+25=0 |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= (m-n)^3(n-m)^2(m-n)=_____ m/n=7/3则m+n/m-n (m-n)^2*(m-n)^4=? (3m-n)(m-2n)=() 如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n= 如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少 (m-2n)^2+(3m-n)(2m+2n)-(2m+n)(2m-n) 已知m+n=4 mn=1 已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=? n=m/M 已知m/n=5/3,求m/(m+n)+m/(m-n)-n平方/(m平方-n平方)