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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (x+20-158)/(x+20) >3/155 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( x + 20 - 158 ) / ( x + 20 ) >3 / 155         (1)
        From the definition field of divisor
         x + 20 ≠ 0        (2 )

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    From inequality(1)：
         x < -20 或  x ＞ 141.118421
    From inequality(2)：
         x < -20 或  x ＞ -20

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    From inequalities (1) and (2)
         x < -20 或  x ＞ 141.118421    (3)

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    The final solution set is :
         x < -20 或  x ＞ 141.118421

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