解不等式:(7-5x)/(x+1)>2(7-5x)/(x+1)>2
问题描述:
解不等式:(7-5x)/(x+1)>2
(7-5x)/(x+1)>2
答
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)