I will be frank: the given equation(formula) for distance is confusing.
If $P: (p,q)~\&~\ell: Ax+By+C=0$ are a point and a line, the the distance $\mathbb{D}(P,\ell)=\dfrac{|Ap+Bq+C|}{A^2+B^2}$

For parallel lines: pick a point $P$ on one find the distance to the other.

In your problem it could be $(1,2), A=12,~B=3,~\&~C=-14$

I will be frank: the given equation(formula) for distance is confusing.
If $P: (p,q)~\&~\ell: Ax+By+C=0$ are a point and a line, the the distance $\mathbb{D}(P,\ell)=\dfrac{|Ap+Bq+C|}{A^2+B^2}$

For parallel lines: pick a point $P$ on one find the distance to the other.

In your problem it could be $(1,2), A=12,~B=3,~\&~C=-14$