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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -1/（3+m） <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -1 / ( 3 + m ) <0         (1)
        From the definition field of divisor
         3 + x ≠ 0        (2 )

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    From inequality(1)：
         m ＞ -3
    From inequality(2)：
         m < -3 或  m ＞ -3

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    From inequalities (1) and (2)
         m ＞ -3    (3)

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    The final solution set is :
         m ＞ -3

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