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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 50m+40(30-m) >= 1400 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        50 * m + 40 * ( 30 - m ) >= 1400         (1)

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    From inequality(1)：
         m ≥ 20

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    The final solution set is :
         m ≥ 20

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