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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1 ≤（x+5）÷2 ≤2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        1 ≤ ( x + 5 ) ÷ 2         (1)
         ( x + 5 ) ÷ 2 ≤2         (2)

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    From inequality(1)：
         x ≥ -3
    From inequality(2)：
         x ≤ -1

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    From inequalities (1) and (2)
         -3 ≤ x ≤ -1    (3)

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    The final solution set is :
         -3 ≤ x ≤ -1

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