8⼀49⼀[9⼀8-(1⼀8+3⼀7)]= 要过程谢谢

2025-06-22 16:16:10
推荐回答(1个)
回答1:

8/49/[9/8-(1/8+3/7)]= 8/49/(9/8-1/8-3/7)=8/49/4/7=2/7