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✔ 最佳答案
m/3 - 2m/9 = 1
3m/9 - 2m/9 = 1
(3m - 2m)/9 = 1
m/9 = 1
m = 9
參考: me
m/3 - 2m/9 = 1
成條式x 大9倍
3m -2m = 9
m= 9
收錄日期: 2021-05-03 02:54:55
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