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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 8/(60+x) ≤0.6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        8 / ( 60 + x ) ≤0.6         (1)
        From the definition field of divisor
         60 + x ≠ 0        (2 )

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    From inequality(1)：
         x ≤ -60 或  x ≥ -140/3
    From inequality(2)：
         x < -60 或  x ＞ -60

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    From inequalities (1) and (2)
         x < -60 或  x ≥ -140/3    (3)

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    The final solution set is :
         x < -60 或  x ≥ -140/3

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