8⼀17+1⼀9×8⼀17÷9怎样简便计算

2024-11-28 18:41:38
推荐回答(1个)
回答1:

8/17+1/9X8/17/9=
81/7+1/9X8/17X1/9=
8/17X(1+1/81)=(8X82)/(17X81)