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Mathematics Algebra Level: Misc Level

Ahmed has first half of a treasure map, which indicates that the treasure is buried in the desert(2x+6) paces from Castle Rock.Vanessa has the other half of the map. Her half indicates that to find the treasure,one must go to the Castle Rock,walk,x, paces to the North, and then walk (2x+4) paces to the East.If they share their information, then they can find ,x, and save a lot of digging.What is ,x,?