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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 7x <60+x <8x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        7 * x <60 + x         (1)
        60 + x <8 * x         (2)

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    From inequality(1)：
         x < 10
    From inequality(2)：
         x ＞ 60/7

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    From inequalities (1) and (2)
         60/7 < x < 10     (3)

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    The final solution set is :
         60/7 < x < 10

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