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x in (-oo:+oo)
(3/(-8))*x-11 = 4 // - 4
(3/(-8))*x-11-4 = 0
-3/8*x-15 = 0 // + 15
-3/8*x = 15 // : -3/8
x = 15/(-3/8)
x = -40
x = -40
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