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t in (-oo:+oo)
4*(4-(7*t)) = -292 // + 292
4*(4-(7*t))+292 = 0
4*(4-7*t)+292 = 0
4*(4-7*t)+292 = 0
308-28*t = 0
308-28*t = 0
308-28*t = 0 // - 308
-28*t = -308 // : -28
t = -308/(-28)
t = 11
t = 11
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