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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality x+2/3（30-x） ≤41 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x + 2 / 3 * ( 30 - x ) ≤41         (1)

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    From inequality(1)：
         x ≤ 63

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    The final solution set is :
         x ≤ 63
[ 2/2Inequality]
    Assignment:Find the solution set of inequality x+2/3（30-x） ≥40 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x + 2 / 3 * ( 30 - x ) ≥40         (1)

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    From inequality(1)：
         x ≥ 60

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    The final solution set is :
         x ≥ 60

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