Answer:
70 + 15x
Step-by-step explanation:
Angle addition postulate:
If point B is in the interior of ∠AOC, then ∠AOB + ∠BOC = ∠AOC.
Here, in the image attached, C is the interior point.
∠LAB = ∠LAC + ∠CAB
= 75 + 15x - 5
= 75 - 5 + 15x {Combine like terms}
= 70 + 15x
