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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 200-a >6a .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        200 - a >6 * a         (1)

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    From inequality(1)：
         a < 200/7

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    The final solution set is :
         a < 200/7
[ 2/2Inequality]
    Assignment:Find the solution set of inequality a >30 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a >30         (1)

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    From inequality(1)：
         a ＞ 30

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    The final solution set is :
         a ＞ 30

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