The angle Johnny holds his pen on paper creates a linear pair. The measure of one angle is 13x+7. The measure of the second angle is one less than twice the first angle. Find the value of x.

The angle Johnny holds his pen on paper creates a linear pair. The measure of one angle is 13x+7. The measure of the second angle is one less than twice the first angle. A linear pair is when the sum of two angle is 180

So (13x+7) + 2 * (13x+7) - 1 = 180

X = 4.10