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

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

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    From inequality(1)：
         -1666543/1000000 < x < -1586667/1000000

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    The final solution set is :
         -1666543/1000000 < x < -1586667/1000000

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