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w in (-oo:+oo)
6*(4*w-2) = 276 // - 276
6*(4*w-2)-276 = 0
6*(4*w-2)-276 = 0
24*w-288 = 0
24*w-288 = 0
24*w-288 = 0 // + 288
24*w = 288 // : 24
w = 288/24
w = 12
w = 12
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