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(567+345*666)/(567*345+222)
简便运算哦.对了我会再加分
人气:481 ℃ 时间:2020-03-28 13:11:03
解答
567×345+222
=567×345+(567-345)
=345×(567-1)+567
=345×566+567
所以,(567+345*666)/(567*345+222)=1
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