Answer:
|x - 5.5| = 3.5
Step-by-step explanation:
First, find the number that is equally distant from 2 and 9 on the number line. It is the average of 2 and 9. (2 + 9)/2 = 11/2 = 5.5. How far is the 5.5 from 9 and from 2? It is 3.5 unit away.
|x - 5.5| = 3.5
