(5⼀6-3⼀4)÷5⼀12÷9⼀5怎样简便计算

2024-12-18 11:28:47
推荐回答(1个)
回答1:

原式=(5/6-3/4)×12/5×5/9
=(5/6-3/4)×4/3
=5/6x4/3-3/4x4/3
=10/9-1
=1/9