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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 8.4r+48 <6.2r+84 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        8.4 * r + 48 <6.2 * r + 84         (1)

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    From inequality(1)：
         r < 180/11

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    The final solution set is :
         r < 180/11

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