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t in (-oo:+oo)
41 = 2*t-5*t+8 // - 2*t-5*t+8
41-(-5*t)-(2*t)-8 = 0
5*t-2*t-8+41 = 0
3*t+33 = 0 // - 33
3*t = -33 // : 3
t = -33/3
t = -11
t = -11
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