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