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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0.5*4.5x+0.4*(15-4.5x)/3 <= 5.2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.5 * 4.5 * x + 0.4 * ( 15 - 4.5 * x ) / 3 <= 5.2         (1)

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    From inequality(1)：
         x ≤ 64/33

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    The final solution set is :
         x ≤ 64/33

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