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数学
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鸡兔同笼,共有51个头,172只腿.鸡兔各有多少只?
人气:248 ℃ 时间:2019-12-06 20:44:45
解答
(172-51×2)÷(4-2),
=(172-102)÷2,
=70÷2,
=35(只),
51-35=16(只).
答:有鸡16只,兔35只.
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