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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality ((172.87+x)/(1135.78+x)) <0.8 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( ( 172.87 + x ) / ( 1135.78 + x ) ) <0.8         (1)
        From the definition field of divisor
         1135.78 + x ≠ 0        (2 )

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    From inequality(1)：
         x ＞ -1135.78
    From inequality(2)：
         x < -56789/50 或  x ＞ -56789/50

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    From inequalities (1) and (2)
         x ＞ -1135.78    (3)

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    The final solution set is :
         x ＞ -1135.78

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