Overview: 3 questions will be solved this time.Among them
           ☆3 inequalities

[ 1/3Inequality]
    Assignment:Find the solution set of inequality 0-a ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0 - a ≥0         (1)

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    From inequality(1)：
         a ≤ 0

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    The final solution set is :
         a ≤ 0
[ 2/3Inequality]
    Assignment:Find the solution set of inequality -4-a ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -4 - a ≥0         (1)

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    From inequality(1)：
         a ≤ -4

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    The final solution set is :
         a ≤ -4
[ 3/3Inequality]
    Assignment:Find the solution set of inequality -8-a ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -8 - a ≥0         (1)

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    From inequality(1)：
         a ≤ -8

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    The final solution set is :
         a ≤ -8

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