Respuesta :

You have to add both the angles in the beginning I messed up on the first try. It can get confusing.
Ver imagen adalbertov1977
(6x - 15) + (x + 8) = 168
7x -7 = 168
7x = 168 + 7
7x/7 = 175/7
x = 25

FJG = 6x - 15
FJG = 6(25) - 15
FJG = 150 - 15
FJG = 135