Determine Whether or Not the Equation Is Linear $$5 [ - 5 x - 7 - 6 ( x + 1 ) ] = 2 x + 7$$

Multiple Choice

Determine whether or not the equation is linear.
- $$5 [ - 5 x - 7 - 6 ( x + 1 ) ] = 2 x + 7$$

A) $\left\{ - \frac { 72 } { 5 } \right\}$
B) $\left\{ - \frac { 24 } { 19 } \right\}$
C) $\left\{ - \frac { 2 } { 5 } \right\}$
D) $\left\{ - \frac { 2 } { 57 } \right\}$