1-{1⼀6 (3⼀4-7⼀12)}怎么简便计算

2024-11-25 06:15:16
推荐回答(1个)
回答1:

1-{1/6+(3/4-7/12)}
=1-(2/12+9/12-7/12)
=1-4/12
=1-1/3
=2/3