What is the value of x in degrees?

The correct answer to this question is 65 degrees. Being that we have to draw two supplementary angles, it is essential to know that the sum of these angles is 180 degrees. With this sum and the information given in the question, we start with the equation x-15° + 2x=180°.

The x in the question we can add together. X by itself automatically has a 1 in front of it, so adding 1 plus 2, will give us 3x. This provides us with the equation 3x-15°=180, which in turn becomes 3x=180°+15°. Adding together 180 and 15 gives us 195. With that, the equation is 3x=195°. To solve x, we would divide 195 by 3, which provides us with the answer of 65.