简便运算:31又3/8乘72又5/13除31又3/8
问题描述:
简便运算:31又3/8乘72又5/13除31又3/8
答
31又3/8乘72又5/13除31又3/8
=(31又3/8÷31又3/8)x72又5/13
=1x72又5/13
=72又5/13
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