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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (2/5)b <= 180-(7/5)b .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 2 / 5 ) * b <= 180 - ( 7 / 5 ) * b         (1)

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    From inequality(1)：
         b ≤ 100

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    The final solution set is :
         b ≤ 100

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