Respuesta :

[tex]\dfrac{5y}{3}=20\ \ \ \ \ |multiply\ both\ sides\ by\ 3\\\\\not3^1\cdot\dfrac{5x}{\not3_1}=3\cdot20\\\\5x=60\ \ \ \ \ |divide\ both\ sides\ by\ 5\\\\\dfrac{5x}{5}=\dfrac{60}{5}\\\\\boxed{x=12}[/tex]