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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 90*x+60*2*x <= 14700 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        90 * x + 60 * 2 * x <= 14700         (1)

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    From inequality(1)：
         x ≤ 70

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    The final solution set is :
         x ≤ 70

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