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t in (-oo:+oo)
4*t+8 = 108/11 // - 108/11
4*t-(108/11)+8 = 0
4*t-108/11+8 = 0
4*t-20/11 = 0 // + 20/11
4*t = 20/11 // : 4
t = 20/11/4
t = 5/11
t = 5/11
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