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X in (-oo:+oo)
(3/10)*X-((19/6)*X) = 17/4 // - 17/4
(3/10)*X-((19/6)*X)-(17/4) = 0
(3/10)*X+(-19/6)*X-17/4 = 0
-43/15*X-17/4 = 0 // + 17/4
-43/15*X = 17/4 // : -43/15
X = 17/4/(-43/15)
X = -255/172
X = -255/172
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