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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 3-1/（2*x） >= 5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 - 1 / ( 2 * x ) >= 5         (1)
        From the definition field of divisor
         2 * x ≠ 0        (2 )

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    From inequality(1)：
         -1/4 ≤ x ≤ 0
    From inequality(2)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         -1/4 ≤ x < 0    (3)

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    The final solution set is :
         -1/4 ≤ x < 0

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