这题的解答为:首先将所有的分母通分就好算了,(3/12+2/12-4/12)÷1/12=1/12÷1/12=1。希望能够帮到你。
解:
(1/4 +1/6 -1/3)÷1/12
=(3+2-4)/12 ×12
=3+2-4
=1
即为所求。
(1/4+1/6-1/3)÷1/12这道题怎么算?
先算括号内
(1/4+1/6-1/3)
先通分
(3/12+2/12-4/12)
=1/12
1/12÷1/12
=1/12x12/1
=1
= 1/4 x 12 + 1/6 x 12 - 1/3 x 12
= 3 + 2 - 4
= 1
解:(1/4+1/6-1/3)÷1/12
=(3/12+2/12-4/12)x12/1
=1/12x12
=1