Can anyone show how they solved this really need help

Yeah! if you add all the measurements together without x, you’d get 594 degrees. if you take the required degrees for a hexagon (720) and subtract 594, you’d get 126. therefore, the missing measurement is 126 degrees.

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!