Question

How do you solve the system of equations and state the answer as an ordered pair, x+y= -5 and x+y= 6?

Answer 1

$x + y = - 5........(1) \\ x + y = 6..........(2) \\ adding \: equ(1) \: and(2) \: we \: get \\ 2x = 1 \\ x = \frac{1}{2} \\ then \\ y = 6 - \frac{1}{2} = \frac{11}{2}$