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w in (-oo:+oo)
3*(2-(3*w)) = -102 // + 102
3*(2-(3*w))+102 = 0
3*(2-3*w)+102 = 0
3*(2-3*w)+102 = 0
108-9*w = 0
108-9*w = 0
108-9*w = 0 // - 108
-9*w = -108 // : -9
w = -108/(-9)
w = 12
w = 12
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