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

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

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    From inequality(1)：
         -2 ≤ x ≤ 5
    From inequality(2)：
         x < 5 或  x ＞ 5

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    From inequalities (1) and (2)
         -2 ≤ x < 5    (3)

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    The final solution set is :
         -2 ≤ x < 5

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