Question

what is the LCM of 9&15?

Answer 1

Notice that \( 9 = 3^2 \) and \( 15 = 3^1 \times 5^1 \)

hence the LCM is
\[ 3^2 \times 5^1 = 45 \]

Answer 2

thank you.. we are studying for a test. my son has not been doing so well in math and i wanted to double check him. its been a long time since ive done this..

Answer 3

sure