Question

{x+y=5 e x-y=0 por favor me ajudem rapido

Answer 1

$2x = 5 \\ x = \frac{5}{2} \\ \\ x - y = 0 \\ \frac{5}{2} - y = 0 \\ \frac{5 - 2y}{2} = 0 \\ 5 - 2y = 0 \\ - 2y = - 5 \times ( - 1) \\ 2y = 5 \\ y = \frac{5}{2}$