3⼀13×4⼀5+10⼀13×4⼀5-4⼀5

2024-11-27 17:31:43
推荐回答(1个)
回答1:

3/13 × 4/5 + 10/13 × 4/5 -4/5
= ( 3 / 13 + 10 / 13 - 1 ) × 4 / 5
= (1 - 1)× 4 / 5
= 0 × 4 / 5
= 0