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x in (-oo:+oo)
(x+16)/3 = 2*x // - 2*x
(x+16)/3-(2*x) = 0
(x+16)/3-2*x = 0
(x+16)/3+(-2*3*x)/3 = 0
x-2*3*x+16 = 0
16-5*x = 0
(16-5*x)/3 = 0
(16-5*x)/3 = 0 // * 3
16-5*x = 0
16-5*x = 0 // - 16
-5*x = -16 // : -5
x = -16/(-5)
x = 16/5
x = 16/5
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