How do I compare x value of a sprite with another(Portugues)

How do I compare a distance x value of an object with the distance x value of another? For example: If spriteBR is on the distance" 10" of the image point 0 (origin) of spritePT----> spriteBR destroy.

So, what I realy want is: if the spriteBR is distant "10" pixels of spritePT or if the spriteBR is between 0 and 10 pixels of spritePT.

I try put other object with that distance, but don't work in all condition of my project.

spriteBR > is on overlapping spritePT at offset (10, 10) > Do something

or

spriteBR.X < spritePT.X-10 > Do something

or

spriteBR.Y < spritePT.Y-10 > Do something