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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -3 ≤3x-1/3 ≤2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -3 ≤3 * x - 1 / 3         (1)
        3 * x - 1 / 3 ≤2         (2)

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    From inequality(1)：
         x ≥ -8/9
    From inequality(2)：
         x ≤ 7/9

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    From inequalities (1) and (2)
         -8/9 ≤ x ≤ 7/9    (3)

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    The final solution set is :
         -8/9 ≤ x ≤ 7/9

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