简算 (21⼀11+6⼀7+4⼀3)÷(7⼀11+2⼀7+4⼀9)

2025-06-26 19:48:31
推荐回答(1个)
回答1:

(21/11+6/7+4/3)÷(7/11+2/7+4/9)=3(7/11+2/7+4/9)÷(7/11+2/7+4/9)=3