Question

resolva o sistema! 
 

x-y=20
x/3=y/2

Answer 1

$x-y=20 \\\frac{x}{3}=\frac{y}{3}\\\\ \left \{ {{x-y=20} \atop {x-y=0}} \right. \\ \\ 2x=20 \\ x=10 \\ \\ -y=20-10 \\ y=-10$