Answer:
7
Step-by-step explanation:
To solve for \( y \), you need to isolate it on one side of the equation. Given the equation:
\[ 10 = y + 3 \]
You can isolate \( y \) by subtracting 3 from both sides:
\[ y = 10 - 3 \]
\[ \boxed{y = 7} \]