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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1/1+21/21+k/7 <0.12 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 / 1 + 21 / 21 + k / 7 <0.12         (1)

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    From inequality(1)：
         k < -329/25

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    The final solution set is :
         k < -329/25

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