3又5分之3+2又2分之1
=3又6/10+2又5/10
=6又1/10
5-3又8分之3
=1又5/8
1又8分之3x4
=4又3/2
=5又1/2
4除以5分之4
=5
1又7分之3x2又5分之4
=10/7x14/5
=4
1又5分之4除以2又10分之7
=9/5÷27/10
=2/3