简便计算: 5⼀7-1⼀12-2⼀7-11⼀12 6⼀7÷[(6⼀7-3⼀8)×8⼀9]

2024-12-30 03:50:12
推荐回答(1个)
回答1:

5/7-1/12+2/7-11/12
=(5/7+2/7)-(1/12+11/12)
=1-1
=0