1. **State the problem:** We need to find the value of $y$ given the equation $y + 5 - x$ and the value $x = -3$. 2. **Rewrite the equation:** The expression $y + 5 - x$ can be interpreted as $y + 5 - x = 0$ if we want to solve for $y$. 3. **Substitute the value of $x$:** Replace $x$ with $-3$ in the equation: $$y + 5 - (-3) = 0$$ 4. **Simplify the equation:** $$y + 5 + 3 = 0$$ $$y + 8 = 0$$ 5. **Solve for $y$:** $$y = -8$$ **Final answer:** $y = -8$