Overview: 4 questions will be solved this time.Among them
           ☆4 inequalities

[ 1/4Inequality]
    Assignment:Find the solution set of inequality 0.5 <= x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.5 <= x         (1)

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    From inequality(1)：
         x ≥ 1/2

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    The final solution set is :
         x ≥ 1/2
[ 2/4Inequality]
    Assignment:Find the solution set of inequality x <4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x <4         (1)

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    From inequality(1)：
         x < 4

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    The final solution set is :
         x < 4
[ 3/4Inequality]
    Assignment:Find the solution set of inequality 0.5 <= -x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.5 <= -x         (1)

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    From inequality(1)：
         x ≤ -1/2

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    The final solution set is :
         x ≤ -1/2
[ 4/4Inequality]
    Assignment:Find the solution set of inequality -x <4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -x <4         (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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