解不等式:(7-5x)/(x+1)>2
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/16 11:31:32
解不等式:(7-5x)/(x+1)>2
(7-5x)/(x+1)>2
(7-5x)/(x+1)>2
![解不等式:(7-5x)/(x+1)>2](/uploads/image/z/7022396-20-6.jpg?t=%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8F%EF%BC%9A%287-5x%29%2F%28x%2B1%29%3E2)
解:
(7-5x)/(x+1)>2
移向通分
[(7-5x)-(2x+2)]/(x+1)>0
[5-7x]/(x+1)>0
(7x-5)/(x+1)
(7-5x)/(x+1)>2
移向通分
[(7-5x)-(2x+2)]/(x+1)>0
[5-7x]/(x+1)>0
(7x-5)/(x+1)