3m-2n=11,4m-n=-15分钟哦!
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3m-2n=11,4m-n=-15分钟哦!3m-2n=11,4m-n=-15分钟哦!3m-2n=11,4m-n=-15分钟哦!3m-2n=11,4m-n=-18m-2n=-2两式相减5m=-13m=-
3m-2n=11,4m-n=-15分钟哦!
3m-2n=11,4m-n=-1
5分钟哦!
3m-2n=11,4m-n=-15分钟哦!
3m-2n=11,4m-n=-1
8m-2n=-2
两式相减5m=-13 m=-13/5
n=4m+1=4x(-13/5)+1=-47/5
5m=-13
m=-13/5
n=-47/5
3m-2n=11,4m-n=-15分钟哦!
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=
(m-2n)(2n+m)-(-3m-4n)(4n-3m)=
.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)^2*(m-n)^4=?
(3m-n)(m-2n)=()
已知m-2n/2m+n=5,求代数式3(m-2n)/2m+n-15(2m+n)/m-2n-2
(m-2n)^2+(3m-n)(2m+2n)-(2m+n)(2m-n) 已知m+n=4 mn=1
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
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
(m-2n/n-m)-(n/m-n)=
m-[n-3m-(m-n)]=?
m/n=5/3,求(m/m+n)+(m/m+n)-(n^2/m^2-n^2)
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
|m-n|=n-m,且|m|=4,|n|=3,则m+n=?
2m+3n+2m+3n+m+2m+3n+n=______