7⼀13*5⼀8+2⼀13*7⼀16-1⼀13*7⼀2

2024-11-28 23:52:32
推荐回答(1个)
回答1:

7/13*5/8+2/13*7/16-1/13*7/2 = 7/13*5/8+7/13*2/16-7/13*1/2 = 7/13*(5/8+2/16-1/2) = 7/13*1/4=7/52