代数式;12345是一个五位数,将数字1放到右边构成新的五位数23451
代数式;12345是一个五位数,将数字1放到右边构成新的五位数23451
数学人气：171 ℃时间：2020-04-11 16:46:17
优质解答
如果x是一个四位数,将数字1放到它的右边,得到一个五位数,可表示为:10000+x;将1放到它的左边,得一个五位数,可表示为:10x+1.
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