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

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

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    From inequality(1)：
         x ≤ -2

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    The final solution set is :
         x ≤ -2
[ 2/2Inequality]
    Assignment:Find the solution set of inequality -x+7 >4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -x + 7 >4         (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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