Need help with this!!

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

How do i find the missing angle measure in a polygon