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t in (-oo:+oo)
((27-9*t)^1)/9 = -8 // + 8
((27-9*t)^1)/9+8 = 0
(27-9*t)/9+8 = 0
(27-9*t)/9+(8*9)/9 = 0
8*9-9*t+27 = 0
99-9*t = 0
(99-9*t)/9 = 0
(99-9*t)/9 = 0 // * 9
99-9*t = 0
99-9*t = 0 // - 99
-9*t = -99 // : -9
t = -99/(-9)
t = 11
t = 11
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