6分之1乘15加15乘6分之5
=15x(1/6+5/6)
=15
(6分之5减4分之3)除12分之5加5分之4
=(5/6-3/4)/(5/12)+4/5
=2-9/5+4/5
=1
28乘(18分之5除27分之36)
=28x5/18x27/36
=14x5/9x3/4
=35/6
6分之1乘15加15乘6分之5
=15x(1/6+5/6)
=15
(6分之5减4分之3)除12分之5加5分之4
=(5/6-3/4)/(5/12)+4/5
=2-9/5+4/5
=1
28乘(18分之5除27分之36)
=28x5/18x27/36
=14x5/9x3/4
=35/6