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