2m+3n=3m-2n=3
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/26 06:22:11
2m+3n=3m-2n=32m+3n=3m-2n=32m+3n=3m-2n=3联立方程组:2m+3n=3(1)3m-2n=3(2)(1)x3-(2)x2得:6m+9n-6m+4n=9-6得:n=3/1
2m+3n=3m-2n=3
2m+3n=3m-2n=3
2m+3n=3m-2n=3
联立方程组:2m+3n=3 (1)
3m-2n=3 (2)
(1)x3-(2)x2得:6m+9n-6m+4n=9-6
得:n=3/13,则,m=15/13
m=15/13 n=9/13
2m+3n=3m-2n
所以,m=5n
2m+3n=10n+3n=13n=3
n=3/13,m=5n=15/13
2m+3n=3m-2n
m=5n
代入
3m-2n=3
15n-2n=13n=3
n=3/13
m=15/13
2m+3n=3m-2n
移项并合并得到:m=5n
代入2m+3n=3即:
10n+3n=3
n=3/13
m=5n=15/13。
(m-n)^3(n-m)^2(m-n)=_____
(3m-n)(m-2n)=()
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
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)
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
2m+3n+2m+3n+m+2m+3n+n=______
(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-3m-(m-n)]=?
m-{n-2m+[3m-(6m+3n)+5n]}=
(m-n)(m+n)+(m+n)²-3=2m²
(2m+n)(2m-n)+n(2m+n)-8m^2n^3/(2n^3) m=-2分之1,n=2013
已知|2m-n/m+2n|=3,求2(2m-n)/m+2n-2m-n/m+2n-3的值
已知|2m -n/m+2n|=3求2(2m-n)/m+2n-2m-n/m+2n-3的值
若2m=3n,求分式(1+m/n-n/n-m)除以(1-m/n-n/n+m)的值
若2m=3n,求分式(1+m/n-n/n-m)除以(1-m/n-n/n+m)的值
若2m-n/m+2n=5,求3(2m-n)/m+2n-m+2n/2m-n+3的值