The number line shows the distance in meters of two birds, A and B, from a worm located at point X: A horizontal number line extends from negative 3 to positive 3. The point labeled as A is at negative 2.5, the point 0 is labeled as X, and the point labeled B is at 2.5.

Write an expression using subtraction to find the distance between the two birds.

Show your work and solve for the distance using additive inverses.