Answer:
9x + 9y + 45 
Explanation:
Now we have to,
→ Simplify the given expression. 
The property we use,
→ Distributive property. 
The expression is,
→ 9(x + y + 5)
Let's simplify the expression,
→ 9(x + y + 5)
→ 9(x) + 9(y) + 9(5)
→ (9 × x) + (9 × y) + (9 × 5) 
→ 9x + 9y + 45 
Hence, answer is 9x + 9y + 45.