Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4/3y ≤70 ≤3/2y .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        4 / 3 * y ≤70         (1)
        70 ≤3 / 2 * y         (2)

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    From inequality(1)：
         y ≤ 105/2
    From inequality(2)：
         y ≥ 140/3

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    From inequalities (1) and (2)
         140/3 ≤ y ≤ 105/2    (3)

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    The final solution set is :
         140/3 ≤ y ≤ 105/2

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