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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 3(90－3y)+4y ≥145 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 * ( 90 - 3 * y ) + 4 * y ≥145         (1)

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    From inequality(1)：
         y ≤ 25

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    The final solution set is :
         y ≤ 25

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