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2016-05-24 · 知道合伙人教育行家
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四又三分之一减去 1.75加上二十分之七的和
=4.75-(1.75+0.35)
=4.75-1.75-0.35
=3-0.35
=2.65
=4.75-(1.75+0.35)
=4.75-1.75-0.35
=3-0.35
=2.65
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2016-05-24 · 知道合伙人教育行家
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= (4+1/3)-(1+3/4+7/20)
= (4+1/3)-(1+15/20+7/20)
= (4+1/3)-(1+22/20)
= (4+1/3)-(1+11/10)
= (4+1/3)-(2+1/10)
= (4-2)+(1/3-1/10)
= 2+(10/30-3/30)
= 2+7/30
= 2又7/30
= (4+1/3)-(1+15/20+7/20)
= (4+1/3)-(1+22/20)
= (4+1/3)-(1+11/10)
= (4+1/3)-(2+1/10)
= (4-2)+(1/3-1/10)
= 2+(10/30-3/30)
= 2+7/30
= 2又7/30
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