12⼀7÷(2⼀3-1⼀4) 要简算

2025-06-23 00:07:39
推荐回答(1个)
回答1:

12/7÷(2/3-1/4)
=12/7×12÷(2/3×12-1/4×12)
=12/7×12÷(8-3)
=12/7×12/5
=144/35