题目
简便运算:1又6分之1X1又7分之1X1又8分之1X1又9分之1X1又10分之1
提问时间:2021-03-02
答案
=6分之7X7分之8X8分之9X9分之10X10分之11
约分
=6分之11
=1又6分之5
约分
=6分之11
=1又6分之5
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