m+2n=2且3m+4n=8,求m+n
m+2n=2且3m+4n=8,求m+n
m+2n=2,3m+4n=8,求m+n=几
求集合M={m|m=2n-1,n属于N*,且m
求集合M={m|m=2n-1,n属于N*,且m
求集合M={m/m=2n-1,n属於n*,且M
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少
若有理数m,n满足 |m|=4,|n|=3且|m-n|=n-m ,求代数式2(2m-n*2)-[5m-(m-n*2)]-
97. 若有理数m、n满足 |m|=4,|n|=3且|m-n|=n-m ,求代数式2(2m-n*2)-[5m-(m-n*
已知m和n是正整数,且m-n+mn=4,求2m+3n的值
已知m^2=2n+5,n^2=2m+5,且m不等于n,求m^3-4mn+n^3的值
{-3/2m+n=4 {2m+n=-3 求m,n 注意,