Question

if ac = 63 and bc = 45, find ab.
if b is between a and c, then ab + bc = ac.

Explanation:

Step1: Identify the formula

$AB + BC=AC$

Step2: Rearrange the formula for AB

$AB=AC - BC$

Step3: Substitute values

$AB = 63-45$

Step4: Calculate the result

$AB = 18$

Answer:

18