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t in (-oo:+oo)
t+(2/3)*t-5 = -115/27 // + -115/27
t+(2/3)*t-(-115/27)-5 = 0
t+(2/3)*t+115/27-5 = 0
5/3*t-20/27 = 0 // + 20/27
5/3*t = 20/27 // : 5/3
t = 20/27/5/3
t = 4/9
t = 4/9
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