Question

How do you solve `y + 2x =3` and `4x = 2 -2y`?

Answer 1

Your system has no solutions.

Explanation:

You can write your system as:
`{2x+y=3`
`{4x+2y=2`
In this way you can see that, apart for the terms after the `=` sign, the second equation is equal to the first one multiplied by `2`.
This implies that your two equations represent two parallel line with no points (and solutions) in common.
Graphically: