Question

add.
(5n + 1) + (8n + 8)

Explanation:

Step1: Remove parentheses

To add the two expressions, we first remove the parentheses: \( (5n + 1) + (8n + 8)=5n + 1 + 8n + 8 \)

Step2: Combine like terms

Combine the \( n \)-terms and the constant terms separately. For the \( n \)-terms: \( 5n+8n = (5 + 8)n=13n \). For the constant terms: \( 1 + 8=9 \). So the result is \( 13n + 9 \).

Answer:

\( 13n + 9 \)