(4又2/7+2又2/11)除以(1又3/7+8/11)

问题描述:

(4又2/7+2又2/11)除以(1又3/7+8/11)
要简便

4又2/7=30/7
2又2/11=24/11
1又3/7=10/7
所以原式=(30/7+24/11)除以(10/7+8/11)
=3乘以(10/7+8/11)除以(10/7+8/11)
=3