Stonehege es uno de los grandes monumentos prehistóricos se en inglaterra todas las piedras exteriores están separadas a 15 m del centro la pregunta cual es la longitud de todas las piedras exteriores

You might wanna put this in spanish.

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!