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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 5x/(7x-2) >x/（x+1） .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        5 * x / ( 7 * x - 2 ) > x / ( x + 1 )         (1)
        From the definition field of divisor
         7 * x - 2 ≠ 0        (2 )
        From the definition field of divisor
         x + 1 ≠ 0        (3 )

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    From inequality(1)：
         -1 < x < 0 或  0.285714 < x < 7/2
    From inequality(2)：
         x < 2/7 或  x ＞ 2/7
    From inequality(3)：
         x < -1 或  x ＞ -1

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    From inequalities (1) and (2)
         -1 < x < 0 或  0.285714 < x < 7/2     (4)
    From inequalities (3) and (4)
         -1 < x < 0 或  0.285714 < x < 7/2     (5)

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    The final solution set is :
         -1 < x < 0 或  0.285714 < x < 7/2

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