Given the system of equations, what is the solution?

Question

x + 2y = 7

x - 2y = -1

{(-4, 6)}
{(-8, -12)}
{(3, 2)}

Answer 1

x + 2y = 7
x - 2y = -1
-------------- add
2 x + 0 = 6
x = 3
well, only one of those choices starts with x = 3