Question

On a number line, points $A,B$ and $C$ are such that $d(A,C)=10,d(C,B)=8$ Find $d(A,B)$ considering all possibilities.

Answer 1

(Image 1)

$d(A,C)=10d(C,B)=8$

$d(A,B)=d(A,C)+d(C,B)=10+8=18$

(Image 2)

$AB=AC-BC$

$=10-8=2$