一个数除以30,所得的商和余数相等,这个数最大是（
一个数除以30,所得的商和余数相等,这个数最大是（
写出简便的解法,
写出简便的解法,
数学人气：963 ℃时间：2019-12-18 20:20:00
优质解答
所得的商和余数相等最大是29,余数必须小于除数,这个数最大是29×30+29=899
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