5x>4x-1 7x+2小于5x-4
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5x>4x-17x+2小于5x-45x>4x-17x+2小于5x-45x>4x-17x+2小于5x-45x>4x-15x-4x>-1x>-17x+2小于5x-47x-5x(1)5x>4x-1 5x-4
5x>4x-1 7x+2小于5x-4
5x>4x-1 7x+2小于5x-4
5x>4x-1 7x+2小于5x-4
5x>4x-1
5x-4x>-1
x>-1
7x+2小于5x-4
7x-5x
(1)5x>4x-1
5x-4x>-1
X>-1
(2)7x+2<5x-4
7x-5x<-4-2
2x<-6
X<-3