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

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

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    From inequality(1)：
         x ＞ -4
    From inequality(2)：
         x ≥ 2/3

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    From inequalities (1) and (2)
         x ≥ 2/3    (3)

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    The final solution set is :
         x ≥ 2/3

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