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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (x-7)/(x-5)-(x+5)/(x+4) ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( x - 7 ) / ( x - 5 ) - ( x + 5 ) / ( x + 4 ) ≥0         (1)
        From the definition field of divisor
         x - 5 ≠ 0        (2 )
        From the definition field of divisor
         x + 4 ≠ 0        (3 )

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    From inequality(1)：
         x ≤ -4 或  -1 ≤ x ≤ 5
    From inequality(2)：
         x < 5 或  x ＞ 5
    From inequality(3)：
         x < -4 或  x ＞ -4

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    From inequalities (1) and (2)
         x ≤ -4 或  -1 ≤ x < 5    (4)
    From inequalities (3) and (4)
         x < -4 或  -1 ≤ x < 5    (5)

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    The final solution set is :
         x < -4 或  -1 ≤ x < 5

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