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

[ 1/3Inequality]
    Assignment:Find the solution set of inequality a >100-a, .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a >100 - a ,         (1)

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    From inequality(1)：
         a ＞ 50

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    The final solution set is :
         a ＞ 50
[ 2/3Inequality]
    Assignment:Find the solution set of inequality a ≤300-3a, .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a ≤300 - 3 * a ,         (1)

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    From inequality(1)：
         a ≤ 75

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    The final solution set is :
         a ≤ 75
[ 3/3Inequality]
    Assignment:Find the solution set of inequality 10a+1600-16a ≤1170 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        10 * a + 1600 - 16 * a ≤1170         (1)

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    From inequality(1)：
         a ≥ 215/3

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    The final solution set is :
         a ≥ 215/3

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