Solve the System of Equations by the Substitution Method $$\left\{ \begin{array} { l } \frac { x } { 7 } - \frac { y } { 8 } = 1 \\\frac { x } { 9 } - y = 8\end{array} \right.$$

Multiple Choice

Solve the system of equations by the substitution method.
- $$\left\{ \begin{array} { l } \frac { x } { 7 } - \frac { y } { 8 } = 1 \\\frac { x } { 9 } - y = 8\end{array} \right.$$

A) $( - 8,0 )$
B) $( 0,8 )$
C) $( 8,0 )$
D) $( 0 , - 8 )$