No solution. That is because and are NOT the same thing.
Now, if what you REALLY meant was that your system of linear equations is:
That is a horse of a completely different color. Since the second equation gives you an expression in that is equal to, and that means "the same as", , you can replace anywhere you see it with that expression in , namely , thus:
Now all you have to do is solve the single variable equation for
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it