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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (300-60)÷(300÷60+x) ≤6-1-2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 300 - 60 ) ÷ ( 300 ÷ 60 + x ) ≤6 - 1 - 2         (1)

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    From inequality(1)：
         x ≤ -5 或  x ≥ 75

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    The final solution set is :
         x ≤ -5 或  x ≥ 75

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