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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (0.2+2t+0.8*8.6)*(7.9t+89.16)/(10.7+t)/86 >= 1.6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 0.2 + 2 * t + 0.8 * 8.6 ) * ( 7.9 * t + 89.16 ) / ( 10.7 + t ) / 86 >= 1.6         (1)
        From the definition field of divisor
         10.7 + x ≠ 0        (2 )

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    From inequality(1)：
         -10.969814 ≤ t ≤ -10.7 或  t ≥ 4.852598
    From inequality(2)：
         t < -107/10 或  t ＞ -107/10

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    From inequalities (1) and (2)
         -10.969814 ≤ t < -107/10 或  t ≥ 4.852598    (3)

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    The final solution set is :
         -10.969814 ≤ t < -107/10 或  t ≥ 4.852598

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