Solve Linear Systems by Addition
- $$\begin{array} { l } 6 y = 63 - 7 x \\2 x = 78 - 6 y\end{array}$$

Multiple Choice

Solve Linear Systems by Addition
- $$\begin{array} { l } 6 y = 63 - 7 x \\2 x = 78 - 6 y\end{array}$$

A) $\{ ( - 3,14 ) \}$
B) $\{ ( 6 , - 14 ) \}$
C) $\{ ( 7 , - 14 ) \}$
D) $\varnothing$