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w in (-oo:+oo)
1 = (5*w-3)/4+(8*w-7)/2 // - (5*w-3)/4+(8*w-7)/2
1-((5*w-3)/4)-((8*w-7)/2) = 0
(-1*(5*w-3))/4+(-1*(8*w-7))/2+1 = 0
(-1*2*(5*w-3))/(2*4)+(-1*4*(8*w-7))/(2*4)+(1*2*4)/(2*4) = 0
1*2*4-1*2*(5*w-3)-1*4*(8*w-7) = 0
8-42*w+34 = 0
42-42*w = 0
(42-42*w)/(2*4) = 0
(42-42*w)/(2*4) = 0 // * 2*4
42-42*w = 0
42-42*w = 0 // - 42
-42*w = -42 // : -42
w = -42/(-42)
w = 1
w = 1
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