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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 18 <7+2.4(x-3) <= 19 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        18 <7 + 2.4 * ( x - 3 )         (1)
        7 + 2.4 * ( x - 3 ) <= 19         (2)

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    From inequality(1)：
         x ＞ 91/12
    From inequality(2)：
         x ≤ 8

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    From inequalities (1) and (2)
         91/12 < x ≤ 8     (3)

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    The final solution set is :
         91/12 < x ≤ 8

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