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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 850 <= 700+6x <= 862 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        850 <= 700 + 6 * x         (1)
         700 + 6 * x <= 862         (2)

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    From inequality(1)：
         x ≥ 25
    From inequality(2)：
         x ≤ 27

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    From inequalities (1) and (2)
         25 ≤ x ≤ 27    (3)

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    The final solution set is :
         25 ≤ x ≤ 27

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