12÷(1⼀4+1⼀5)=几分之几

2025-04-24 12:20:53
推荐回答(4个)
回答1:

3分之80

回答2:

12÷(1/4+1/5)
=12÷[5/(4×5)+4/(4×5)]
=12÷[(5+4)/20]
=12÷9/20
=12×20/9
=80/3

回答3:

3/80

回答4:

80/3