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要不同的自然數.我知道兩種答案. 其實掌握算發就很容易 1/12=10/120,10/120=4/120+6/120=1/30+1/20 =10/120=2/120+8/120=1/60+1/15 答:[1/30+1/20]. [1/60+1/15].
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