比较1234*4321与1235*4320的大小.
怎么比?
人气：398 ℃ 时间：2020-04-17 06:34:45
解答
1234*4321-1235*4320
=1234*4321-(1234+1)*4320
=1234*4321-1234*4320-4320
=1234(4321-4320)-4320
=1234-4320
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