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w in (-oo:+oo)
w+1/2 = 8-((3/2)*w) // - 8-((3/2)*w)
w+(3/2)*w+1/2-8 = 0
5/2*w-15/2 = 0 // + 15/2
5/2*w = 15/2 // : 5/2
w = 15/2/5/2
w = 3
w = 3
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