Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 18x+26(8-x) >= 165 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        18 * x + 26 * ( 8 - x ) >= 165         (1)

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    From inequality(1)：
         x ≤ 43/8

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    The final solution set is :
         x ≤ 43/8
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 18x+26(8-x) <= 190 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        18 * x + 26 * ( 8 - x ) <= 190         (1)

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    From inequality(1)：
         x ≥ 9/4

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    The final solution set is :
         x ≥ 9/4

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