Question

X = 2y + 3
y = 2x + 3
What are the values for x and y?

Answer 1

You should use a calculator my friend.

Answer 2

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 = 2x + 3

y = 2(-3) + 3

y = -3

Answer: x = -3; y = -3