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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 2X1＋3X2＋4X3 ≤8 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2 * X * 1 + 3 * X * 2 + 4 * X * 3 ≤8         (1)

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    From inequality(1)：
         X ≤ 2/5

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    The final solution set is :
         X ≤ 2/5
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 4X1＋2X2＋2X3 ≤7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        4 * X * 1 + 2 * X * 2 + 2 * X * 3 ≤7         (1)

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    From inequality(1)：
         X ≤ 1/2

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    The final solution set is :
         X ≤ 1/2

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