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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality (134770000/（X-18）-1)*（50-(79-2X)） <306540000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 134770000 / ( X - 18 ) - 1 ) * ( 50 - ( 79 - 2 * X ) ) <306540000         (1)
        From the definition field of divisor
         x - 18 ≠ 0        (2 )

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    From inequality(1)：
         X < 18 或  X ＞ 43.496987
    From inequality(2)：
         X < 18 或  X ＞ 18

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    From inequalities (1) and (2)
         X < 18 或  X ＞ 43.496987    (3)

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    The final solution set is :
         X < 18 或  X ＞ 43.496987
[ 2/2Inequality]
    Assignment:Find the solution set of inequality X >18X <40 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
         X >18 * X         (1)
        18 * X <40         (2)

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    From inequality(1)：
         X < 0
    From inequality(2)：
         X < 20/9

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    From inequalities (1) and (2)
         X < 0    (3)

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    The final solution set is :
         X < 0

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