5/3×7/6+50/3×7/10=? 简便算法
问题描述:
5/3×7/6+50/3×7/10=? 简便算法
答
5/3×7/6+50/3×7/10
=5/3×7/6+5/3×7/1
=5/3×(7/6+7/1)
=5/3×1
=5/3