solve for the value of a.\nanswer attempt 1 out of 2\na =

Explanation:

Step1: Set up the equation

Since the two angles are vertical angles and vertical angles are equal, we have $6a - 1=67$.

Step2: Solve for $a$

Add 1 to both sides of the equation: $6a-1 + 1=67 + 1$, which simplifies to $6a=68$. Then divide both sides by 6: $a=\frac{68}{6}=\frac{34}{3}$.

Answer:

$a = \frac{34}{3}$