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w in (-oo:+oo)
(w+2)/5+3 = (w+6)/3 // - (w+6)/3
(w+2)/5-((w+6)/3)+3 = 0
(w+2)/5+(-1*(w+6))/3+3 = 0
(3*(w+2))/(3*5)+(-1*5*(w+6))/(3*5)+(5*3^2)/(3*5) = 0
3*(w+2)-1*5*(w+6)+5*3^2 = 0
45-2*w-24 = 0
21-2*w = 0
(21-2*w)/(3*5) = 0
(21-2*w)/(3*5) = 0 // * 3*5
21-2*w = 0
21-2*w = 0 // - 21
-2*w = -21 // : -2
w = -21/(-2)
w = 21/2
w = 21/2
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