2m+3n=3m-2n=3
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![2m+3n=3m-2n=3](/uploads/image/z/405977-41-7.jpg?t=2m%2B3n%3D3m-2n%3D3)
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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。
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