Answer
Algebraic expression translation: $x - (8-x)$
Simplified form: $2x-8$
Work Step by Step
Let
$x$ = the unknown number
The difference between eight and the number:
$8-x$
A number decreased by the difference between eight and the number:
$x - (8-x)$
Simplifying gives:
$=x-8-(-x)
\\=x-8+x
\\=2x-8$
