I need major help on this word problem

Question

In a triangle, the measure of the first angle is twice the measure of the second angle.The measure of the third angle is 8 degrees less than the measure of the second angle. What is the measure of each angle?

Answer 1

To solve, you need to recall that the sum of interior angles of a triangle is 180º. Therefore:

A + B + C = 180

A = 2B

C = B - 8

180 = 2B + B + B - 8 = 4B - 8 -> 188 = 4B -> 47 = B, 94 = A, 39 = C