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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （50-40）×40-（40-32）x ≥800 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 50 - 40 ) × 40 - ( 40 - 32 ) * x ≥800         (1)

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    From inequality(1)：
         x ≤ -50

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    The final solution set is :
         x ≤ -50

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