$\"\"$

Let x = the number.

Twice the number represents $\"\"$ .

17 decreased twice the number represents $\"\"$ . $\"\"$

$\"\"$

$\"\"$ (Add 17 to each side)

$\"\"$ (Apply additive inverse property: $\"\"$ )

$\"\"$ (Apply additive identity property: $\"\"$ )

$\"\"$ (Add: $\"\"$ ) $\"\"$

$\"\"$ (Divide each side by 2)

$\"\"$ (Cancel common terms)

$\"\"$ (Divide: $\"\"$ ) $\"\"$

The number is $\"\"$ .