Answer
$-4m+n + 1$
Work Step by Step
The distributive property states that for any real numbers $a, b$, and $c$,
$a(b+c) = ab + ac$
Combine like terms using the distributive property to obtain:
$=-4m+(2n-n)+1
\\=-4m + (2-1)n + 1
\\=-4m+1(n) + 1
\\=-4m+n + 1$
