實際上是個方程組,m+n=16 and m-n=+-4, the solution is m=10, n=6, or n=10,m=6. 如果 m+n=25 and m-n=+-5, then m=15, n=10, or m=10, n=15.
實際上是個方程組,m+n=16 and m-n=+-4, the solution is m=10, n=6, or n=10,m=6. 如果 m+n=25 and m-n=+-5, then m=15, n=10, or m=10, n=15.
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