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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality X-3/X+7 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         X - 3 / X + 7 <0         (1)
        From the definition field of divisor
        x ≠ 0        (2 )

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    From inequality(1)：
         X < -7.405125 或  0 < X < 0.405125
    From inequality(2)：
         X < 0 或  X ＞ 0

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    From inequalities (1) and (2)
         X < -7.405125 或  0 < X < 0.405125     (3)

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    The final solution set is :
         X < -7.405125 或  0 < X < 0.405125

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