2m-3n/3m+5n=3 则(4m-6n/18m+30n)+9m+15n/4m-6n的值是多少
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2m-3n/3m+5n=3 则(4m-6n/18m+30n)+9m+15n/4m-6n的值是多少
2m-3n/3m+5n=3 则(4m-6n/18m+30n)+9m+15n/4m-6n的值是多少
2m-3n/3m+5n=3 则(4m-6n/18m+30n)+9m+15n/4m-6n的值是多少
2m-3n/3m+5n=3 则:3m+5n/2m-3n=1/3
(4m-6n/18m+30n)+9m+15n/4m-6n
=2(2m+3n)/6(3m+5n)+3(3m+5n)/2(2m-3n)
=1/3 * 3 + 3/2 * 1/3
=1+1/2
=3/2
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=
如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n=
.4(m+n)^2*(m+n)^3-7(m+n)(m+n)^4+5(m+n)^5=
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-2m+[3m-(6m+3n)+5n]}=
若m、n互为相反数,则(5m-3n)-(2m-6n)=
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少
[2(m+n)^5-3(m+n)^4+(-m-n)^3]÷[2(m+n)^3]
(m-2n)(2n+m)-(-3m-4n)(4n-3m)=
|m-n|=n-m,且|m|=4,|n|=3,则m+n=?
(m-5n)(m-n)-6(m+2n)(m-3n)计算,要有过程
(m-5n)(m-n)-6(m+2n)(m-3n)
计算(m+4n)(m-n)-6(m+2n)(m-3n)
(m+4n)(m-n)-6(m+2n)(m-3n)
(m+4n)(m-n)-6(m+2n)(m-3n),
m/n=7/3则m+n/m-n