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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1130 >= a >= 1070 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        1130 >= a         (1)
         a >= 1070         (2)

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    From inequality(1)：
         a ≤ 1130
    From inequality(2)：
         a ≥ 1070

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    From inequalities (1) and (2)
         1070 ≤ a ≤ 1130    (3)

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    The final solution set is :
         1070 ≤ a ≤ 1130

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