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t in (-oo:+oo)
259/9 = 7/9-2*t-((1/3)*t) // - 7/9-2*t-((1/3)*t)
(1/3)*t-(-2*t)+259/9-(7/9) = 0
2*t+(1/3)*t+259/9-7/9 = 0
7/3*t+28 = 0 // - 28
7/3*t = -28 // : 7/3
t = -28/7/3
t = -12
t = -12
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