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t in (-oo:+oo)
(3/8)*(t-1) = (-2/3)*t+(1/2)*t-2 // - (-2/3)*t+(1/2)*t-2
(3/8)*(t-1)-((-2/3)*t)-((1/2)*t)+2 = 0
(3/8)*(t-1)+(2/3)*t+(-1/2)*t+2 = 0
3/8*(t-1)+(2*t)/3-t/2+2 = 0
(3/8*2*3*(t-1))/(2*3)+(2*2*t)/(2*3)+(3*(-t))/(2*3)+(3*2^2)/(2*3) = 0
3/8*2*3*(t-1)+2*2*t+3*(-t)+3*2^2 = 0
25/4*t-3*t-9/4+12 = 0
13/4*t-9/4+12 = 0
13/4*t+39/4 = 0
(13/4*t+39/4)/(2*3) = 0
(13/4*t+39/4)/(2*3) = 0 // * 2*3
13/4*t+39/4 = 0
13/4*t+39/4 = 0 // - 39/4
13/4*t = -39/4 // : 13/4
t = -39/4/13/4
t = -3
t = -3
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