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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 6.8 >(x/(x+1))*11.2 >5.2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        6.8 > ( x / ( x + 1 ) ) * 11.2         (1)
         ( x / ( x + 1 ) ) * 11.2 >5.2         (2)
        From the definition field of divisor
         x + 1 ≠ 0        (3 )

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    From inequality(1)：
         -1 < x < 17/11
    From inequality(2)：
         x < -1 或  x ＞ 13/15
    From inequality(3)：
         x < -1 或  x ＞ -1

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    From inequalities (1) and (2)
         13/15 < x < 17/11     (4)
    From inequalities (3) and (4)
         13/15 < x < 17/11     (5)

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    The final solution set is :
         13/15 < x < 17/11

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