(3又7⼀11+1又12⼀13)÷(16⼀11+10⼀13)

2025-06-20 07:21:45
推荐回答(1个)
回答1:

(3又7/11+1又12/13)÷(16/11+10/13)
=(40/11+25/13)÷(16/11+10/13)
=5x(8/11+5/13)÷[2x(8/11+5/13)]
=5÷2
=2.5