4(2x-3) = 3+8x-11 solve the equation for x.

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

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