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t in (-oo:+oo)
(1/2)*(3*t-4) = (5/2)*t-t-(4/4) // - (5/2)*t-t-(4/4)
(1/2)*(3*t-4)-((5/2)*t)+t+4/4 = 0
(1/2)*(3*t-4)+(-5/2)*t+t+4/4 = 0
1/2*(3*t-4)+(-5*t)/2+t+1 = 0
(1/2*2*(3*t-4))/2+(-5*t)/2+(2*t)/2+(1*2)/2 = 0
1/2*2*(3*t-4)-5*t+2*t+1*2 = 0
2*t-2*t-4+2 = 0
2-4 = 0
-2 = 0
-2/2 = 0
-2/2 = 0 // * 2
-2 = 0
t belongs to the empty set
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