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t in (-oo:+oo)
2*(7-(4*t)) = 22 // - 22
2*(7-(4*t))-22 = 0
2*(7-4*t)-22 = 0
2*(7-4*t)-22 = 0
-8*t-8 = 0
-8*t-8 = 0
-8*t-8 = 0 // + 8
-8*t = 8 // : -8
t = 8/(-8)
t = -1
t = -1
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