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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -2x-4x     Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -2 * x - 4 * x < x + 1         (1)
         x + 1 <2 * ( 3 * x - 1 ) + 1         (2)

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    From inequality(1)：
         x ＞ -1/7
    From inequality(2)：
         x ＞ 2/5

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    From inequalities (1) and (2)
         x ＞ 2/5    (3)

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    The final solution set is :
         x ＞ 2/5

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