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x in (-oo:+oo)
(2/5)*(1-(5*x)) = (1/2)*(4*x+3) // - (1/2)*(4*x+3)
(2/5)*(1-(5*x))-((1/2)*(4*x+3)) = 0
(2/5)*(1-5*x)+(-1/2)*(4*x+3) = 0
2/5*(1-5*x)-1/2*(4*x+3) = 0
2/5*(1-5*x)-1/2*(4*x+3) = 0
-4*x-11/10 = 0
-4*x-11/10 = 0
-4*x-11/10 = 0 // + 11/10
-4*x = 11/10 // : -4
x = 11/10/(-4)
x = -11/40
x = -11/40
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