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2⼀9-7⼀16×9分之二怎么用简便算法?
2⼀9-7⼀16×9分之二怎么用简便算法?
要简便算法
2025-03-15 23:24:23
推荐回答(1个)
回答1:
2/9 - 7/16×2/9
= 2/9×(1-7/16)
= 2/9×9/16
= 2/16
= 1/8
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