Question

x + y = 6 x - y = 2 me ajudem

Answer 1

Resposta:

x+y=6  

x=y+2

x+y=6  

y + 2 + y =6

2y +2 =6

2y= 6-2

2y=4

y=4/2

y=2

x=y+2

x= 2+2

x=4

S=(4,2)