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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 10 <(30+x)/2 <18 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        10 < ( 30 + x ) / 2         (1)
         ( 30 + x ) / 2 <18         (2)

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    From inequality(1)：
         x ＞ -10
    From inequality(2)：
         x < 6

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    From inequalities (1) and (2)
         -10 < x < 6     (3)

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    The final solution set is :
         -10 < x < 6

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