如题所述
20-(1/2+1/3)/5/6*1.2
=20-(5/6)/5/6*1.2
=20-1.2
=18.8
=20-(5/6)/5/6*1.2
=20-1.2
=18.8
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第1个回答 2012-04-17
20-(1/2+1/3)/5/6×1.2
= 20-(5/6)/5/6×1.2
= 20-1/5/6
= 20-1/30
= 19 又 29/30本回答被提问者和网友采纳
= 20-(5/6)/5/6×1.2
= 20-1/5/6
= 20-1/30
= 19 又 29/30本回答被提问者和网友采纳
第2个回答 2012-04-18
20-(1/2+1/3)/5/6*1.2
=20-5/6×1.2/5/6
=20-(5/6×6/5)/5/6
=20-1/(5×6)
=599/30
=20-5/6×1.2/5/6
=20-(5/6×6/5)/5/6
=20-1/(5×6)
=599/30
