Solve the Equation for X $$\left| \begin{array} { r r } 3 & x \\2 & - 1\end{array} \right| = 7$$

Multiple Choice

Solve the equation for x.
- $$\left| \begin{array} { r r } 3 & x \\2 & - 1\end{array} \right| = 7$$

A) $\{ 5 \}$
B) $\{ - 5 \}$
C) $\left\{ \frac { 7 } { 3 } \right\}$
D) $\left\{ \frac { 7 } { 2 } \right\}$