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t in (-oo:+oo)
(5/11)*t = 7*(5-(2*t)) // - 7*(5-(2*t))
(5/11)*t-(7*(5-(2*t))) = 0
(5/11)*t-7*(5-2*t) = 0
(5*t)/11-7*(5-2*t) = 0
(-7*11*(5-2*t))/11+(5*t)/11 = 0
5*t-7*11*(5-2*t) = 0
159*t-385 = 0
(159*t-385)/11 = 0
(159*t-385)/11 = 0 // * 11
159*t-385 = 0
159*t-385 = 0 // + 385
159*t = 385 // : 159
t = 385/159
t = 385/159
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