1⼀1x2x3+1⼀2x3x4+1⼀3x4x5+1⼀4x5x6+1⼀5x6x7=?

1/1x2x3+1/2x3x4+1/3x4x5+1/4x5x6+1/5x6x7=?有公式吗?这类题
2024-12-17 06:39:50
推荐回答(1个)
回答1:

6/7