Find all $x$ such that neither $2+x+5x$ nor $2-x-8-3x$ is in the interval $(-2,11]$. Express your answer as an interval or as a union of intervals.
We simplify the inequalities to find [7x \le -14, \qquad 4x \ge -10.]Both inequalities are satisfied by x≤−2, so the answer is x≤−2.
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