Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality z大于等于48-z .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         z ≥48 - z         (1)

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    From inequality(1)：
         z ≥ 24

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    The final solution set is :
         z ≥ 24
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 3(48-z)加5z小于等于200 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 * ( 48 - z ) + 5 * z ≤200         (1)

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    From inequality(1)：
         z ≤ 28

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    The final solution set is :
         z ≤ 28

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