1. Solve the following inequalities and express the solution in set notation. Draw the graph of the solution on the straight line.
Suggestion: use the critical points method and eliminate the absolute value according to the sign obtained in each interval.

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1) Ix - 1|-12x + 31 3x-4 2) 4-1x1 s 112x1-6이 1) Ix - 1|-12x + 31 3x-4 2) 4-1x1 s 112x1-6이