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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 26 <2x+1.5(15-x) <27 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        26 <2 * x + 1.5 * ( 15 - x )         (1)
        2 * x + 1.5 * ( 15 - x ) <27         (2)

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    From inequality(1)：
         x ＞ 7
    From inequality(2)：
         x < 9

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    From inequalities (1) and (2)
         7 < x < 9     (3)

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    The final solution set is :
         7 < x < 9

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