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