7⼀13×5⼀8+3⼀12x7⼀16十1⼀13x3又1⼀2=

7/13×5/8+3/12x7/16十1/13x3又1/2=
2025-06-20 14:54:36
推荐回答(1个)
回答1:

7/13×5/8+2/13×7/16-1/13×3又1/2 =7/13×5/8+7/13×1/8-7/13×1/2 =7/13×(5/8+1/8-1/2) =7/13×1/4 =7/52