回答详情
危厚
2019-11-10 12:53:30
100/(2.5x)+5=100/x
100/x-100/(2.5x)=5
20/x-20/(2.5x)=1
20/x-8/x=1
12/x=1
x=12
100/x-100/(2.5x)=5
20/x-20/(2.5x)=1
20/x-8/x=1
12/x=1
x=12
最新回答
2025-09-19 15:57:21
2025-09-19 15:57:14
2025-09-19 15:57:07
2025-09-19 15:56:59
2025-09-19 15:56:52
2025-09-19 15:56:46
