2у-у

To simplify the expression \(2y - y\), you can combine like terms. Starting with the expression: \[ 2y - y \] You can think of \(2y\) as having 2 parts of \(y\) and \(y\) as 1 part of \(y\). Thus, when you subtract \(y\) from \(2y\), you are left with: \[ 2y - 1y = (2 - 1)y = 1y \] So, the simplified expression is: \[ y \]