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

[ 1/3Inequality]
    Assignment:Find the solution set of inequality 14/5 ≤t ≤28/5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        14 / 5 ≤ t         (1)
         t ≤28 / 5         (2)

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    From inequality(1)：
         t ≥ 14/5
    From inequality(2)：
         t ≤ 28/5

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    From inequalities (1) and (2)
         14/5 ≤ t ≤ 28/5    (3)

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    The final solution set is :
         14/5 ≤ t ≤ 28/5
[ 2/3Inequality]
    Assignment:Find the solution set of inequality t ≤74/25 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         t ≤74 / 25         (1)

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    From inequality(1)：
         t ≤ 74/25

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    The final solution set is :
         t ≤ 74/25
[ 3/3Inequality]
    Assignment:Find the solution set of inequality t ≥34/25 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         t ≥34 / 25         (1)

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    From inequality(1)：
         t ≥ 34/25

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    The final solution set is :
         t ≥ 34/25

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