Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （100-10X）×（2+X） >320 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 100 - 10 * X ) × ( 2 + X ) >320         (1)

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    From inequality(1)：
         2 < X < 6

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    The final solution set is :
         2 < X < 6

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