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x in (-oo:+oo)
(3/4)*x = 2*x-8 // - 2*x-8
(3/4)*x-(2*x)+8 = 0
(3/4)*x-2*x+8 = 0
8-5/4*x = 0 // - 8
-5/4*x = -8 // : -5/4
x = -8/(-5/4)
x = 32/5
x = 32/5
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