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

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

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    From inequality(1)：
         x ≥ -3

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

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    From inequality(1)：
         X ≤ 4

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    The final solution set is :
         X ≤ 4

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