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t in (-oo:+oo)
22/3 = (-1/3)*t+(1/2)*t+8 // - (-1/3)*t+(1/2)*t+8
22/3-((-1/3)*t)-((1/2)*t)-8 = 0
(1/3)*t+(-1/2)*t+22/3-8 = 0
-1/6*t-2/3 = 0 // + 2/3
-1/6*t = 2/3 // : -1/6
t = 2/3/(-1/6)
t = -4
t = -4
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