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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （173+x）/（278+x） ≥0.85 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 173 + x ) / ( 278 + x ) ≥0.85         (1)
        From the definition field of divisor
         278 + x ≠ 0        (2 )

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    From inequality(1)：
         x ≤ -278
    From inequality(2)：
         x < -278 或  x ＞ -278

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    From inequalities (1) and (2)
         x < -278    (3)

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    The final solution set is :
         x < -278

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