Question

factor the expression 15k - 18. use 3 as the common factor. 15k - 18 = ( k - )

Explanation:

Step1: Divide first - term by 3

$\frac{15k}{3}=5k$

Step2: Divide second - term by 3

$\frac{18}{3} = 6$

Answer:

$3(5k - 6)$