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           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 20000*7.0 ≤20000*(1+4.2%)*(7.0-x) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        20000 * 7.0 ≤20000 * ( 1 + 4.2 % ) * ( 7.0 - x )         (1)

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    From inequality(1)：
         x ≤ 0.28215

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    The final solution set is :
         x ≤ 0.28215

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