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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （45000-37000-X)/(37000+X) <20% .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 45000 - 37000 - X ) / ( 37000 + X ) <20 %         (1)
        From the definition field of divisor
         37000 + x ≠ 0        (2 )

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    From inequality(1)：
         X ＞ 500
    From inequality(2)：
         X ∈ R （R为全体实数），即在实数范围内，不等式恒成立！

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    From inequalities (1) and (2)
         X ＞ 500    (3)

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    The final solution set is :
         X ＞ 500

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