find the value of x. show your work

Answer:
X = 6
Step-by-step explanation:
Since the two angles are equal, in order to solve for X, you set the two equal:
40° = (4 + 6x)°
-4 -4
36° = 6x
36°/6 = 6x/6
6 = X
X = 6
Hope this helps!
I left the work too ;)