How can x2 + 3x + 1 = 2x2 + 2x + 3 be set up as a system of equations?

The answer is:
y = x² + 3x + 1
y = 2x² + 2x + 3

If a = b = y, then a = y and b = ?
Our expression is x² + 3x + 1 = 2x² + 2x + 3

Let  x² + 3x + 1 = 2x² + 2x + 3 = y
Therefore
x² + 3x + 1 = y
2x² + 2x + 3 = y

Now we have the system of two equations:
1. y = x² + 3x + 1
2. y = 2x² + 2x + 3

Hi i just wanted you and me and you are a nice right off my mind and