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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 216000000 ≤300×461×420＋14.3×200X（455－X÷2） .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        216000000 ≤300 × 461 × 420 + 14.3 × 200 * x * ( 455 - x ÷ 2 )         (1)

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    From inequality(1)：
         x ≥ 144.201626

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    The final solution set is :
         x ≥ 144.201626

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