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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality −1 <9a+135 ≤8 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -1 <9 * a + 135         (1)
        9 * a + 135 ≤8         (2)

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    From inequality(1)：
         a ＞ -136/9
    From inequality(2)：
         a ≤ -127/9

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    From inequalities (1) and (2)
         -136/9 < a ≤ -127/9     (3)

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    The final solution set is :
         -136/9 < a ≤ -127/9

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