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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 9x >10 >8.9x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        9 * x >10         (1)
        10 >8.9 * x         (2)

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    From inequality(1)：
         x ＞ 10/9
    From inequality(2)：
         x < 1.123596

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    From inequalities (1) and (2)
         10/9 < x < 1.123596     (3)

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    The final solution set is :
         10/9 < x < 1.123596

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