12x(4分之3+3分之1-6分之5(用简便方法计算)

2024-11-07 17:55:43
推荐回答(3个)
回答(1):

 

回答(2):

 

回答(3):

12 X [(3/4)+(1/3)-(5/6)]
=12x(3/4)+12x(1/3)-12x(5/6)
=9+4-10
=3