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2x-3 / x-2 > 0 /*x-2
2x-3 > 0
2x > 3
x > 3/2
x>1,5
---------------------------->
--------------|-------------------------------------
1,5
b)
1/x-1 - 2/x-1 < 3 / x-1
1-2 < 3x -3
-1 < 3x - 3
2 < 3x
2/3 < x
--------------------------------->
---------|-----------------------------
2/3