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

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

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    From inequality(1)：
         x ＞ -3

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    The final solution set is :
         x ＞ -3
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 7-x <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        7 - x <0         (1)

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    From inequality(1)：
         x ＞ 7

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    The final solution set is :
         x ＞ 7

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