# How do you solve 21= | y + 685| + 6?

Apr 12, 2018

$y = - 670$

#### Explanation:

Since everything inside of the absolute value bars ($| y + 685 |$) is already positive there is no need for them anymore:
$21 = y + 685 + 6$
$21 = y + 691$
$y = - 670$
$21 = | - 670 + 685 | + 6$
$21 = | 15 | + 6$
$21 = 21$