1⼀2 2⼀3×括号3⼀4-1⼀6括号除以7⼀9脱式计算

2025-06-28 02:53:38
推荐回答(1个)
回答1:

1/2 2/3×括号3/4-1/6括号除以7/9脱式计算
解:
1/2+ 2/3×(3/4-1/6)除以7/9
=1/2+2/3×7/12÷7/9
=1/2+1/2
=1