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x in (-oo:+oo)
(25/5)*x-(2*(4*x+3)) = x // - x
(25/5)*x-(2*(4*x+3))-x = 0
(25/5)*x-2*(4*x+3)-x = 0
5*x-2*(4*x+3)-x = 0
5*x-2*(4*x+3)-x = 0
-3*x-x-6 = 0
-4*x-6 = 0
-4*x-6 = 0
-4*x-6 = 0 // + 6
-4*x = 6 // : -4
x = 6/(-4)
x = -3/2
x = -3/2
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