Express the set of numbers x satisfying the given condition as an interval.
Recall that is equivalent to . Using this, write the equivalent statement of .
Solve for x by applying any of the algebraic operations of addition, subtraction, multiplication, or division to all three parts of this double inequality. Recall that the inequality signs are reversed when multiplying or dividing through by a negative number.
Solve the double inequality for x.
Thus, the set of all numbers x satisfying in interval notation is.
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