(3M-2N) - (3M-6N +5)
m-{n-2m+[3m-(6m+3n)-5n]}化简
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
计算题:(1) 5(m+n)(m--n)--2(m+n)(m+n)--3(m-n)(m--n)
若2m-n/m+2n=5,求3(2m-n)/m+2n-m+2n/2m-n+3的值
初一计算:(m+5n)(m-n)-6(m+2n)(n-3n)?
计算(3-m+n)*(3+m-n)-(2-m+n)*(2+m-n)
(3m-4n)(4n+3m)-(2m-n)(2m+n)
(m-5n)(m-n)-6(m+2n)(m-3n)
已知2m+n分之m-2n=3,则2m+n分之3(m-2n)+3(2m+n)分之m-2n-4(2m+n)分之5(m-2n)
(5m+2n)(5m-2n)-(3m-4n)(4m+3n)
已知m/n = 5/3 求m/(m+n)+m/(m-n)-n^2/(m^2-n^2)等于多少?(要化简全过程)
2m-{n+[4m-3(m+2n)]}-5n化简求值