Overview: 3 questions will be solved this time.Among them
           ☆3 inequalities

[ 1/3Inequality]
    Assignment:Find the solution set of inequality x-2 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x - 2 <0         (1)

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    From inequality(1)：
         x < 2

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    The final solution set is :
         x < 2
[ 2/3Inequality]
    Assignment:Find the solution set of inequality 2x+1 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2 * x + 1 <0         (1)

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

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

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    From inequality(1)：
         x ＞ -3

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    The final solution set is :
         x ＞ -3

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