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x in (-oo:+oo)
2*(a-1)-((3/4)*w) = 3 // - 3
2*(a-1)-((3/4)*w)-3 = 0
2*(a-1)+(-3/4)*w-3 = 0
2*(a-1)+(-3*w)/4-3 = 0
(2*4*(a-1))/4+(-3*w)/4+(-3*4)/4 = 0
2*4*(a-1)-3*w-3*4 = 0
8*a-3*w-12-8 = 0
8*a-3*w-20 = 0
(8*a-3*w-20)/4 = 0
(8*a-3*w-20)/4 = 0 // * 4
8*a-3*w-20 = 0
x belongs to the empty set
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