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w in (-oo:+oo)
-(3*w)-6 = 24 // - 24
-(3*w)-24-6 = 0
-3*w-24-6 = 0
-3*w-30 = 0 // + 30
-3*w = 30 // : -3
w = 30/(-3)
w = -10
w = -10
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