Find All Real Solutions of the Equation $| 7 x + 1 | = 7$

Multiple Choice

Find all real solutions of the equation. $| 7 x + 1 | = 7$

A) $x = - 8$ ,
$x = 8$
B) $x = - \frac { 8 } { 7 }$ ,
$x = \frac { 6 } { 7 }$
C) $x = - \frac {8 } { 7 }$ ,
$x = - 1$
D) $x = - \frac { 7 } { 8 }$ ,
$x = \frac { 7 } { 6 }$
E) no solution