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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 200×(5x＋1－3/x) ≥3000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        200 × ( 5 * x + 1 - 3 / x ) ≥3000         (1)
        From the definition field of divisor
        x ≠ 0        (2 )

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    From inequality(1)：
         -1/5 ≤ x ≤ 0 或  x ≥ 3
    From inequality(2)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         -1/5 ≤ x < 0 或  x ≥ 3    (3)

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    The final solution set is :
         -1/5 ≤ x < 0 或  x ≥ 3

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