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w in (-oo:+oo)
3/4-((1/2)*(4*w-1)) = 7/8 // - 7/8
3/4-((1/2)*(4*w-1))-(7/8) = 0
(-1/2)*(4*w-1)+3/4-7/8 = 0
3/4-1/2*(4*w-1)-7/8 = 0
(-1/2*4*8*(4*w-1))/(4*8)+(3*8)/(4*8)+(-7*4)/(4*8) = 0
3*8-1/2*4*8*(4*w-1)-7*4 = 0
40-64*w-28 = 0
12-64*w = 0
(12-64*w)/(4*8) = 0
(12-64*w)/(4*8) = 0 // * 4*8
12-64*w = 0
12-64*w = 0 // - 12
-64*w = -12 // : -64
w = -12/(-64)
w = 3/16
w = 3/16
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