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x in (-oo:+oo)
-10 = 2*x-((3*x)/4) // - 2*x-((3*x)/4)
(3*x)/4-(2*x)-10 = 0
(3*x)/4-2*x-10 = 0
-5/4*x-10 = 0 // + 10
-5/4*x = 10 // : -5/4
x = 10/(-5/4)
x = -8
x = -8
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