51分之19除以38分之17
问题描述:
51分之19除以38分之17
答
19/51÷17/38
=19/51×38/17
=722/867
感觉怪怪的...应该是乘以吧...
19/51×17/38
=17/51×19/38
=1/3×1/2
=1/6