Respostas

2013-12-13T02:17:08-02:00
X + y = 17
x - y = 11
2x = 28
x = 28/2
x = 14

x + y = 17 
14 + y = 17
y = 17 - 14
y = 3
1 5 1
  • Usuário do Brainly
2013-12-13T07:35:18-02:00
X + y = 17
x - y = 11
----------
2x = 28
x = 28/2
x = 14
---------
para achar o vlor de Y, substitua:
x + y = 17
14 + y = 17
y = 17 - 14
y = 3
-----------

S = { 14, 3 }