Question

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

Explanation:

Step1: Identify the relationship

Since $AB + BC=AC$, we can rewrite it to find $AB$.

Step2: Rearrange the formula

$AB=AC - BC$.

Step3: Substitute values

Substitute $AC = 63$ and $BC = 45$ into the formula. So $AB=63 - 45$.

Step4: Calculate the result

$AB = 18$.

Answer:

$18$