SOLUTION: How do you solve: (x - y) + (2x + y)i = -3 + 9i Thanks!

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Question 285349: How do you solve:
(x - y) + (2x + y)i = -3 + 9i

Thanks!
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
(x - y) + (2x + y)i = -3 + 9i


x-y=-3
2x+y=9
---------
3x=6

x=2
y=5

Answers: x=2, y=5