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

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

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    From inequality(1)：
         a ＞ 2

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

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    From inequality(1)：
         a < 3

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    The final solution set is :
         a < 3

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