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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （3x+1）/(2-x) <= 4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 3 * x + 1 ) / ( 2 - x ) <= 4         (1)
        From the definition field of divisor
         2 - x ≠ 0        (2 )

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    From inequality(1)：
         x ≤ 1 或  x ≥ 2
    From inequality(2)：
         x < 2 或  x ＞ 2

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    From inequalities (1) and (2)
         x ≤ 1 或  x ＞ 2    (3)

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    The final solution set is :
         x ≤ 1 或  x ＞ 2

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