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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -1+a     Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -1 + a < a         (1)

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    From inequality(1)：
         a ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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    The final solution set is :
         a ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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