Question

x- Y=8
x+y=14
Resolução ​

Answer 1

{x - y = 8

{x + y = 14

2x= 22

x= 22/2

x= 11

11 - y = 8

- y = 8 - 11

- y = - 3 (-1)

y= 3

S= ( 11 , 3)