Answer:
You should use a calculator my friend.
x = -3; y = -3
Explanation:
x = 2y + 3
y = 2x + 3
x = 2(2x + 3) + 3
x = 4x + 6 + 3
-3x = 9
x = -3
y = 2(-3) + 3
y = -3
Answer: x = -3; y = -3
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