(172-51×2)÷(4-2),
=(172-102)÷2,
=70÷2,
=35(只),
51-35=16(只).
答:有鸡16只,兔35只.
鸡兔同笼,共有51个头,172只腿.鸡兔各有多少只?
鸡兔同笼,共有51个头,172只腿.鸡兔各有多少只?
数学人气:207 ℃时间:2019-12-06 20:44:45
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