Question

脱式计算怎么算呢我忘了

脱式计算,我忘记怎么算了,大恩大德感激不尽
12分之11减12分之1减12分之5
8分之7加8份之1减8分之4
13分之11加13分之1减13分之6

Answer 1

脱式计算怎么算，这是我看过讲解的最清晰的了

Answer 2

11/12-1/12-5/12
=10/12-5/12
=5/12
7/8+1/8-4/8
=1-4/8
=4/8
=1/2
11/13+1/13-6/13
=12/13-6/13
=6/13