Answer
$-6x+10$
Work Step by Step
First, simplify within the parentheses by distributing 3 to obtain:
$=6-2[3x+3-5]
\\=6-2[3x-2]$
Distribute $-2$ to obtain:
$=6-6x-(-4)
\\=6-6x+4$
Simplify by combining like terms:
$\\=-6x+(6+4)
\\=-6x+10$