5分之1乘以27加5分之3乘以41简便运算
问题描述:
5分之1乘以27加5分之3乘以41简便运算
答
=1/5×3×9+3/5×41
=3/5×9+3/5×41
=3/5×(9+41)
=3/5×50
=30