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t in (-oo:+oo)
(-4/7)*t+3/4 = 103/308 // - 103/308
(-4/7)*t+3/4-(103/308) = 0
(-4/7)*t+3/4-103/308 = 0
32/77-4/7*t = 0 // - 32/77
-4/7*t = -32/77 // : -4/7
t = -32/77/(-4/7)
t = 8/11
t = 8/11
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