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t in (-oo:+oo)
11/140 = t-((2/5)*t)+1/4 // - t-((2/5)*t)+1/4
(2/5)*t-t+11/140-(1/4) = 0
(2/5)*t-t+11/140-1/4 = 0
-3/5*t-6/35 = 0 // + 6/35
-3/5*t = 6/35 // : -3/5
t = 6/35/(-3/5)
t = -2/7
t = -2/7
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