17分之3×37分之5+17分之5×37分之34怎么简算?算式清楚·····
问题描述:
17分之3×37分之5+17分之5×37分之34怎么简算?算式清楚·····
答
3/17×5/37+5/17×34/37
=5/17×3/37+5/17×34/37
=5/17×(3/37+34/37)
=5/17×1
=5/17