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w in (-oo:+oo)
(3/4)*w+1/2 = 5*w-(185/4) // - 5*w-(185/4)
(3/4)*w-(5*w)+1/2+185/4 = 0
(3/4)*w-5*w+1/2+185/4 = 0
187/4-17/4*w = 0 // - 187/4
-17/4*w = -187/4 // : -17/4
w = -187/4/(-17/4)
w = 11
w = 11
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