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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (2×(t-0.6)+0.8×11.5)×(8.3*t+91.49)/(13.9+t) ≥1.6×11.5×10 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 2 × ( t - 0.6 ) + 0.8 × 11.5 ) × ( 8.3 * t + 91.49 ) / ( 13.9 + t ) ≥1.6 × 11.5 × 10         (1)
        From the definition field of divisor
         13.9 + x ≠ 0        (2 )

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    From inequality(1)：
         -13.9 ≤ t ≤ -12.63974 或  t ≥ 8.701186
    From inequality(2)：
         t < -139/10 或  t ＞ -139/10

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    From inequalities (1) and (2)
         -139/10 < t ≤ -12.63974 或  t ≥ 8.701186    (3)

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    The final solution set is :
         -139/10 < t ≤ -12.63974 或  t ≥ 8.701186

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