Anybody plz answer this world problem question thanks! Also (show work and steps how u get answer) hopefully u guys can see this 1 :3 WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DDD

Problem number 26 of the rhind papyrus says: find a quantity such that when it is added to of itself the result is a 15. the modern day equation that models this problem is x + x = 15. what is the solution to the equation? x = 10 x = 12 x = 15 x = 30