3⼀8+1⼀2-1⼀4简便5-4⼀7-3⼀7简便5⼀6-1⼀4+2⼀3简便?

2024-10-22 15:21:44
推荐回答(1个)
回答1:

3/8+1/2-1/4=3/8+1/4=3/8+2/8=5/8
5-4/7-3/7=5-(4/7+3/7)=5-1=4
5/6-1/4+2/3=10/12-3/12+8/12=15/12=5/4=1.25