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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (600*3+50*n)/(n+3) ≤60 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 600 * 3 + 50 * n ) / ( n + 3 ) ≤60         (1)
        From the definition field of divisor
         x + 3 ≠ 0        (2 )

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    From inequality(1)：
         n ≤ -3 或  n ≥ 162
    From inequality(2)：
         n < -3 或  n ＞ -3

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    From inequalities (1) and (2)
         n < -3 或  n ≥ 162    (3)

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    The final solution set is :
         n < -3 或  n ≥ 162

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