Sole for x. enter your answer in the box.

The sum of all angles in a pentagon is 540 degrees. Now that we know that, we can begin our equation:

100+102+108+121+x=540

Now, let's combine like terms: 431+x=540

Now, let's subtract 431 on both sides to figure out what x equals: x=109

x=109

If you have any further questions, please let me know in the comments of this answer! Thanks :)

; )

step-by-step explanation: ; )