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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2000+(500/(1+r)) >-6800+(10000/(1+r)) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2000 + ( 500 / ( 1 + r ) ) > -6800 + ( 10000 / ( 1 + r ) )         (1)
        From the definition field of divisor
         1 + x ≠ 0        (2 )
        From the definition field of divisor
         1 + x ≠ 0        (3 )

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    From inequality(1)：
         r < -1 或  r ＞ 0.079545
    From inequality(2)：
         r < -1 或  r ＞ -1
    From inequality(3)：
         r < -1 或  r ＞ -1

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    From inequalities (1) and (2)
         r < -1 或  r ＞ 0.079545    (4)
    From inequalities (3) and (4)
         r < -1 或  r ＞ 0.079545    (5)

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    The final solution set is :
         r < -1 或  r ＞ 0.079545

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