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x in (-oo:+oo)
3*(x-(1/2)) = 5*(x+7/2)+4*x-1 // - 5*(x+7/2)+4*x-1
3*(x-(1/2))-(5*(x+7/2))-(4*x)+1 = 0
3*(x-1/2)-5*(x+7/2)-4*x+1 = 0
3*(x-1/2)-5*(x+7/2)-4*x+1 = 0
1-2*x-4*x-19 = 0
1-6*x-19 = 0
-6*x-18 = 0
-6*x-18 = 0
-6*x-18 = 0 // + 18
-6*x = 18 // : -6
x = 18/(-6)
x = -3
x = -3
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