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t in (-oo:+oo)
14-(3*(5*t-12)) = 1-((20*t)/1) // - 1-((20*t)/1)
(20*t)/1-(3*(5*t-12))-1+14 = 0
20*t-3*(5*t-12)-1+14 = 0
20*t-3*(5*t-12)-1+14 = 0
5*t-1+14+36 = 0
5*t+14+35 = 0
5*t+49 = 0
5*t+49 = 0
5*t+49 = 0 // - 49
5*t = -49 // : 5
t = -49/5
t = -49/5
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