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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （0.5y）+［0.7（10-y）］ ≥23 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 0.5 * y ) + ( 0.7 * ( 10 - y ) ) ≥23         (1)

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    From inequality(1)：
         y ≤ -80

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    The final solution set is :
         y ≤ -80

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