Question

Given the system of equations, what is the solution?



x + 2y = 11

x - 2y = -1

{(-5, -3)}
{(1, 1)}
{(5, 3)}

Answer 1

x + 2y = 11
x - 2y = -1
-----------add
2x + 0 = 10
2x = 10
x = 5
now sub 5 in for x in either of the original equations
x + 2y = 11
5 + 2y = 11
2y = 11 - 5
2y = 6
y = 3
ANSWER : (5,3)