Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2 ≤33+2-2x ≤18 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        2 ≤33 + 2 - 2 * x         (1)
        33 + 2 - 2 * x ≤18         (2)

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    From inequality(1)：
         x ≤ 33/2
    From inequality(2)：
         x ≥ 17/2

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    From inequalities (1) and (2)
         17/2 ≤ x ≤ 33/2    (3)

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    The final solution set is :
         17/2 ≤ x ≤ 33/2

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