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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 7（1-x）小于等于3（1-2x） .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        7 * ( 1 - x ) ≤3 * ( 1 - 2 * x )         (1)

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    From inequality(1)：
         x ≥ 4

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    The final solution set is :
         x ≥ 4

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