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a)
1/x-3>1/x+1
x+1>x-3
x-x>-3-1
b)
1/x+5<1/x+1
x+1<x+5
x-x<5-1
c)
1/2x-3<1/2x+8
2x+8<2x-3
2x-2x<-3-8
d)
1/3x-2>1/3x-6
3x-6>3x-2
3x-3x>-2+6
3x-6>3x-2
3x-3x>-2+6
7
a)
4x2+5/4x<x
4x2+5<4x2