Question

1. 4 + (3n + 6) - 2n

Explanation:

Step1: Remove parentheses (no sign change)

$4 + 3n + 6 - 2n$

Step2: Combine like terms (constants and $n$-terms)

For constants: $4 + 6 = 10$
For $n$-terms: $3n - 2n = n$
So, $10 + n$ (or $n + 10$)

Answer:

$n + 10$ (or $10 + n$)