#### Answer

$10x$

#### Work Step by Step

Simplify within the grouping symbols first to obtain:
$=8-2[3-5x-(-1)]
\\=8-2[3-5x+1]
\\=8-2(-5x+4)$
Distribute the 2 to obtain:
$=8 - 2(-5x) -2(4)
\\=8 + 10x - 8$
Combine like terms to obtain:
$=10x + (8-8)
\\=10x$