# How do you solve the following system: 6x + 7y = -9 , 5x - 7y = 12 ?

$11 x = 3 \implies x = \frac{3}{11}$
hence $y = - \frac{117}{77}$
The solution of the system is $\left(\frac{3}{11} , - \frac{117}{77}\right)$