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t in (-oo:+oo)
2*(-6*t-8) = -112 // + 112
2*(-6*t-8)+112 = 0
2*(-6*t-8)+112 = 0
96-12*t = 0
96-12*t = 0
96-12*t = 0 // - 96
-12*t = -96 // : -12
t = -96/(-12)
t = 8
t = 8
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