SOLUTION: Solve the system of equations x + y = 6 x - y = -9

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Question 516726: Solve the system of equations
x + y = 6
x - y = -9

Answer by mananth(16949) About Me  (Show Source):
You can put this solution on YOUR website!
x + y = 6
x - y = -9
add both equations
2x=-3
/2
x=-3/2
plug x in (1)
x+y=6
-3/2+y=6
y=6+3/2
y=15/2