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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality x+1 ≤5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x + 1 ≤5         (1)

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    From inequality(1)：
         x ≤ 4

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    The final solution set is :
         x ≤ 4
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 7-4x <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        7 - 4 * x <1         (1)

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    From inequality(1)：
         x ＞ 3/2

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    The final solution set is :
         x ＞ 3/2

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