Question

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

Answer 1

distribute the -1
3 + -1*-1 + -1*-2n
then distribute the 2 for n and 4: 2*n + 2*4
so you have 3+1+2n +2n +8
combine like terms
(2n+2n)+(3+1+8)
simplify