Someone help but you have to be great at these and has to be correct I’m giving brainliest so yeah

A quadrilateral is made up of 360 degrees. We can create an expression to solve for x.
86 + 152 + 58 + x = 360
296 + x = 360
Solve for x.
296 + x = 360
~Subtract 296 to both sides
296 - 296 + x = 360 - 296
~Simplify
x = 64
Therefore, x equals 64.
Best of Luck!