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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 7800/(112+x)+10000/(134.4+x)+10000/(112+x) <150 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        7800 / ( 112 + x ) + 10000 / ( 134.4 + x ) + 10000 / ( 112 + x ) <150         (1)
        From the definition field of divisor
         112 + x ≠ 0        (2 )
        From the definition field of divisor
         134.4 + x ≠ 0        (3 )
        From the definition field of divisor
         112 + x ≠ 0        (4 )

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    From inequality(1)：
         x < -134.4 或  -126.94366 < x < -112 或  x ＞ 65.876993
    From inequality(2)：
         x < -112 或  x ＞ -112
    From inequality(3)：
         x < -672/5 或  x ＞ -672/5
    From inequality(4)：
         x < -112 或  x ＞ -112

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    From inequalities (1) and (2)
         x < -134.4 或  -126.94366 < x < -112 或  x ＞ 65.876993    (5)
    From inequalities (3) and (5)
         x < -672/5 或  -126.94366 < x < -112 或  x ＞ 65.876993    (6)
    From inequalities (4) and (6)
         x < -672/5 或  -126.94366 < x < -112 或  x ＞ 65.876993    (7)

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    The final solution set is :
         x < -672/5 或  -126.94366 < x < -112 或  x ＞ 65.876993

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