9/23÷1又2/5+2/7÷2又5/9怎么简便?
2020-10-20 · 知道合伙人教育行家
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9/23÷1又2/5+2/7÷2又5/9
=9/23÷7/5+2/7÷23/9
=9/23×5/7+2/7×9/23
=9/23×(5/7+2/7)
=9/23×1
=9/23
=9/23÷7/5+2/7÷23/9
=9/23×5/7+2/7×9/23
=9/23×(5/7+2/7)
=9/23×1
=9/23
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展开全部
9/23÷1又2/5+2/7÷2又5/9
=9/23÷7/5+2/7÷23/9
=9/23×5/7+2/7×9/23
=9/23×(5/7+2/7)
=9/23×1
=9/23
=9/23÷7/5+2/7÷23/9
=9/23×5/7+2/7×9/23
=9/23×(5/7+2/7)
=9/23×1
=9/23
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已踩过<
评论
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你对这个回答的评价是?
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