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t in (-oo:+oo)
4*t+4*t+2/9 = 446/63 // - 446/63
4*t+4*t+2/9-(446/63) = 0
4*t+4*t+2/9-446/63 = 0
8*t-48/7 = 0 // + 48/7
8*t = 48/7 // : 8
t = 48/7/8
t = 6/7
t = 6/7
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