Overview: 2 questions will be solved this time.Among them
           ☆1 inequalities

【1/2】12 * 9 = 36 * 3 ;
    Input error！
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 67 >58 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        67 >58         (1)

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

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