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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -1 <= (y+4)/2 <2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -1 <= ( y + 4 ) / 2         (1)
         ( y + 4 ) / 2 <2         (2)

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    From inequality(1)：
         y ≥ -6
    From inequality(2)：
         y < 0

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    From inequalities (1) and (2)
         -6 ≤ y < 0    (3)

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    The final solution set is :
         -6 ≤ y < 0

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