Question

{x+y=12{x\y=12 urgente qual e a resposta??

Answer 1

X = 12 - y

$\frac{12 -y}{y}$ = 12

Tiramos o mmc de 1 e y = y

12 - y = 12y
-y -12y = -12 (-1)
13y = 12
y = $\frac{12}{13}$