m=2+n,2m+3n=14
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m=2+n,2m+3n=14m=2+n,2m+3n=14m=2+n,2m+3n=142m=4+2n.2m+3n=14,两式相减,3n=10-2n,n=2,m=4m=2+n①2m+3n=14②把①式代入
m=2+n,2m+3n=14
m=2+n,2m+3n=14
m=2+n,2m+3n=14
2m=4+2n.2m+3n=14,两式相减,3n=10-2n,n=2,m=4
m=2+n①
2m+3n=14②
把①式代入②式,得:
2(2+n)+3n=4+5n=14
解得:n=2
把n=2代入①得:m=4.
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