Thursday, April 3, 2014

Solve: |2x-1| < 9

|2x-1|<9
-9 < 2x-1 < 9
-9+1 < 2x-1+1 < 9+1
-8 < 2x < 10
-8/2 < 2x/2 < 10/2
-4 < x < 5
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