What is the value of x ? Plzzz help

Assuming from the picture that you only need to solve one of the equations to get the answer
4k + 5 = 115
-5 from both sides
4k = 110
Divide 110 by 4 = 27.5
K = 27.5
Answer:
k = 10
Step-by-step explanation:
Exterior angle is the sum of the opposite interior angles.
(4k + 5) + (6k + 10) = 115
4k + 5 + 6k + 10 = 115
10k + 15 = 115
10 k = 100
k = 10