小明和笑笑共有50本书,小明给笑笑5本书,他们两的书就一样多.小明和笑笑原来各有多少本书?
小明和笑笑共有50本书,小明给笑笑5本书,他们两的书就一样多.小明和笑笑原来各有多少本书?
数学人气：402 ℃时间：2020-06-17 07:11:47
优质解答
30.20过程，求X设小明有x本，所以小红有50-x本，x-5=50-x+5，解得x=30
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