Solve the System of Equations by Substitution, If a Solution $$\left\{ \begin{array} { l } - 6 x + 6 y = 66 \\- 3 x + 4 y = 42\end{array} \right.$$

Multiple Choice

Solve the system of equations by substitution, if a solution exists.
- $$\left\{ \begin{array} { l } - 6 x + 6 y = 66 \\- 3 x + 4 y = 42\end{array} \right.$$

A) $x = - 3 , y = 10$
B) $x = - 2 , y = 10$
C) No solution
D) $x = - 2 , y = 9$