Respostas

  • Usuário do Brainly
2014-05-18T10:09:39-03:00
-4+6=-10
-4-10=6

espero ter ajudado :)
2014-05-18T10:44:10-03:00
X + y = -10 
x - y  =    6
2x     = -4
x = -4 / 2
x = -2

x + y = -10
-2 + y = -10
y = -10 + 2
y = -8
1 5 1