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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 7     Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        7 < x + 1.5 * ( 7 - x )         (1)
         x + 1.5 * ( 7 - x ) <= 8         (2)

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    From inequality(1)：
         x < 7
    From inequality(2)：
         x ≥ 5

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    From inequalities (1) and (2)
         5 ≤ x < 7    (3)

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    The final solution set is :
         5 ≤ x < 7

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