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x in (-oo:+oo)
4*(x-4) = 5*x+1/2 // - 5*x+1/2
4*(x-4)-(5*x)-(1/2) = 0
4*(x-4)-5*x-1/2 = 0
(2*4*(x-4))/2+(-5*2*x)/2-1/2 = 0
2*4*(x-4)-5*2*x-1 = 0
-2*x-32-1 = 0
-2*x-33 = 0
(-2*x-33)/2 = 0
(-2*x-33)/2 = 0 // * 2
-2*x-33 = 0
-2*x-33 = 0 // + 33
-2*x = 33 // : -2
x = 33/(-2)
x = -33/2
x = -33/2
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