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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (6.6-1.5)x+(8.8-1.2)(20-x) <= 120 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 6.6 - 1.5 ) * x + ( 8.8 - 1.2 ) * ( 20 - x ) <= 120         (1)

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    From inequality(1)：
         x ≥ 64/5

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    The final solution set is :
         x ≥ 64/5

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