help please
and explain how to do this if u are able to
![help please and explain how to do this if u are able to class=](https://us-static.z-dn.net/files/d92/6fb944295494f2c65c67e7b2bcd7dae7.png)
Answer:
40°
Step-by-step explanation:
90+50=140
sum of all angels = 180
180-140 = 40
so, x=40°