Olá, tudo bem?
[tex]3+1.6x=0.1x\\3+1.6x-0.1x= 0\\3+1.5x=0\\1.5x = -3\\\\$\dfrac{1.5x}{1.5}$=$\dfrac{-3}{1.5}$\\\\ x = $\dfrac{-3}{1.5}$\\\\x = - 2[/tex]
