11分之5x[(5分之2+3分之1)/6分之5]
=5/11×[11/15/(5/6)]
=5/11×11/25
=1/5
15分之4+15分之11/5分之3
=4/15+11/9
=59/15
=3又14/15
44分之27x43
=27/44×(44-1)
=27-27/44
=26又17/44
11分之5x[(5分之2+3分之1)/6分之5]
=5/11×[11/15/(5/6)]
=5/11×11/25
=1/5
15分之4+15分之11/5分之3
=4/15+11/9
=59/15
=3又14/15
44分之27x43
=27/44×(44-1)
=27-27/44
=26又17/44