Answer :
x + y = -3
x - y = 13
2x = 10
2 2
x = 5
x + y = -3
5 + y = -3
- 5 - 5
y = -8
(x, y) = (5, -8)
x - y = 13
2x = 10
2 2
x = 5
x + y = -3
5 + y = -3
- 5 - 5
y = -8
(x, y) = (5, -8)