The problem is to simplify the expression $(2x + y) - (-2y + x)$.

1. Problem Description

The problem is to simplify the expression $(2x + y) - (-2y + x)$.

2. Solution Steps

We need to simplify the given expression by removing parentheses and combining like terms.

$(2x + y) - (-2y + x)$

First, we distribute the negative sign in front of the second parentheses.

$2x + y + 2y - x$

Next, we combine like terms. We combine the $x$ terms and the $y$ terms.

$(2x - x) + (y + 2y)$

$1x + 3y$

$x + 3y$

3. Final Answer

$x + 3y$