## Precalculus (6th Edition) Blitzer

$y$
Start with expression: $\frac{1}{2}(2y)+[(-7x)+7x]$. Divide $2y$ by $2$ to simplify the first term: $y+[(-7x)+7x]$. Use additive inverse property to simplify inside brackets: $y+[0]$. Simplify for answer: $y$.