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1/(2/3)/(3/4)/(4/5)/(5/6)/(6/7)/(7/8) 用简算

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1/(2/3)/(3/4)/(4/5)/(5/6)/(6/7)/(7/8) 用简算
1/(2/3)/(3/4)/(4/5)/(5/6)/(6/7)/(7/8) 用简算
1/(2/3)/(3/4)/(4/5)/(5/6)/(6/7)/(7/8)
=1x3/2x4/3x5/4x6/5x7/6x8/7
=8/2
=4
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再问: 1*3/2*4/3*5/4*6/5*7/6*8/7��ô���8/2�ģ�����
再答: 3 4 5 6 7 都消去了