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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0.0002/0.0002+x <0.0004 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.0002 / 0.0002 + x <0.0004         (1)

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    From inequality(1)：
         x < -2499/2500

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    The final solution set is :
         x < -2499/2500

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