All you need to do is set the equation for angle b to the equation for angle d and solve for x and then what ever you got for you x value plug it in to one of the tow equations and what ever you get as a final answer is the value of each angle
One could be 53 because 53^2 = 28^2 + 45^2
45 and 65 are not possibe because the other leg isnt a whole number. Same or 195
197 could be because 197^2 = 195^2 + 28^2