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

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

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    From inequality(1)：
         x < 5/6
    From inequality(2)：
         x ≥ -2/3

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    From inequalities (1) and (2)
         -2/3 ≤ x < 5/6    (3)

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    The final solution set is :
         -2/3 ≤ x < 5/6

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