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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2x <150-5x <2.5x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        2 * x <150 - 5 * x         (1)
        150 - 5 * x <2.5 * x         (2)

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    From inequality(1)：
         x < 150/7
    From inequality(2)：
         x ＞ 20

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    From inequalities (1) and (2)
         20 < x < 150/7     (3)

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    The final solution set is :
         20 < x < 150/7

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