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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2a+3(800-a) >= 2100 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2 * a + 3 * ( 800 - a ) >= 2100         (1)

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    From inequality(1)：
         a ≤ 300

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    The final solution set is :
         a ≤ 300

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