(1+1⼀7+1⼀23)x(1⼀7+1⼀23+1⼀29)—(1⼀7+1⼀23)x(1+1⼀7+1⼀23+1⼀29)

2025-01-19 13:10:03
推荐回答(1个)
回答1:

(1+1/7+1/23)x(1/7+1/23+1/29)—(1/7+1/23)x(1+1/7+1/23+1/29)
=1/29.
因为被减数9项,减数8项,就相差一个。1/29