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w in (-oo:+oo)
(3/4)*(w-24) = (1/2)*(w-12) // - (1/2)*(w-12)
(3/4)*(w-24)-((1/2)*(w-12)) = 0
(3/4)*(w-24)+(-1/2)*(w-12) = 0
3/4*(w-24)-1/2*(w-12) = 0
3/4*(w-24)-1/2*(w-12) = 0
1/4*w-12 = 0
1/4*w-12 = 0
1/4*w-12 = 0 // + 12
1/4*w = 12 // : 1/4
w = 12/1/4
w = 48
w = 48
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