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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -3x-2 >= 7x+1 >= -3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -3 * x - 2 >= 7 * x + 1         (1)
         7 * x + 1 >= -3         (2)

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    From inequality(1)：
         x ≤ -3/10
    From inequality(2)：
         x ≥ -4/7

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    From inequalities (1) and (2)
         -4/7 ≤ x ≤ -3/10    (3)

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    The final solution set is :
         -4/7 ≤ x ≤ -3/10

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