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t in (-oo:+oo)
(1/6)*(5*t-8) = t+8/12 // - t+8/12
(1/6)*(5*t-8)-t-(8/12) = 0
(1/6)*(5*t-8)-t-2/3 = 0
1/6*(5*t-8)-t-2/3 = 0
(1/6*3*(5*t-8))/3+(3*(-t))/3-2/3 = 0
1/6*3*(5*t-8)+3*(-t)-2 = 0
-1/2*t-4-2 = 0
-1/2*t-6 = 0
(-1/2*t-6)/3 = 0
(-1/2*t-6)/3 = 0 // * 3
-1/2*t-6 = 0
-1/2*t-6 = 0 // + 6
-1/2*t = 6 // : -1/2
t = 6/(-1/2)
t = -12
t = -12
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