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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality ((5*z)/4)*(80/(80-z))^60 >7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( ( 5 * z ) / 4 ) * ( 80 / ( 80 - z ) ) ^ 60 >7         (1)
        From the definition field of divisor
         80 - x ≠ 0        (2 )

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    From inequality(1)：
         1.629319 < z < 164.637403
    From inequality(2)：
         z < 80 或  z ＞ 80

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    From inequalities (1) and (2)
         1.629319 < z < 80 或  80 < z < 164.637403     (3)

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    The final solution set is :
         1.629319 < z < 80 或  80 < z < 164.637403

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