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

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

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    From inequality(1)：
         a ＞ -3/2
    From inequality(2)：
         a < 0

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    From inequalities (1) and (2)
         -3/2 < a < 0     (3)

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    The final solution set is :
         -3/2 < a < 0

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