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t in (-oo:+oo)
t/3 = 1.36 // - 1.36
t/3-1.36 = 0
1/3*t-1.36 = 0 // + 1.36
1/3*t = 1.36 // : 1/3
t = 1.36/1/3
t = 4.08000004
t = 4.08000004
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