m-2/n=2 2m+3n=12 要x
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m-2/n=22m+3n=12要xm-2/n=22m+3n=12要xm-2/n=22m+3n=12要xm-2=2n2m+3n=12n=8/7m=30/7m-(2/n)=2(m-2)=2/n4/n-8+
m-2/n=2 2m+3n=12 要x
m-2/n=2 2m+3n=12 要x
m-2/n=2 2m+3n=12 要x
m-2=2n
2m+3n=12
n=8/7 m=30/7
m-(2/n)=2 (m-2)=2/n 4/n-8+3n=0 3n^2-8n+4=0 n=2 n=2/3
m=3 m=5
(m-n)^3(n-m)^2(m-n)=_____
2x+n/m=m/n-(m/n+n/m)x(m+n不等于0)
(3m-n)(m-2n)=()
(m-2n/n-m)-(n/m-n)=
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
m-2/n=2 2m+3n=12 要x
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=
m/n=5/3,求(m/m+n)+(m/m+n)-(n^2/m^2-n^2)
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设集合M={x|x=2n+1,n∈N},N={x|x=3n,n∈N},则M∩N=
2m+3n+2m+3n+m+2m+3n+n=______
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已知x^m=3,x^n=6 求 x^m-n,x^3m-2n的值
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m^2(x-n)=n^2(x-m)(m^2≠n^2)
解方程:x/m-2n=x/n-2m (m≠n)
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已知x^m=2,x^n=5.(1)x^m+n、x^m-n的值;(2)求x^3m-2n的值