Question

x-80=-y
x/3=y/5

rápido pfv

Answer 1

A
$x - 80 = - y \\ x + y = 80 \\ x = 80$
B
$\frac{x}{3} = \frac{y}{5} \\ \frac{x}{15} = \frac{y}{15} \\ x = y$