Question

What is the lcm and gcm of 12:56

Answer 1

Explanation:

`\begin{array}c12&2\\6&2\\3&3\\1\end{array}\qquad\qquad\begin{array}cc56&2\\28&2\\14&2\\7&7\\1\end{array}\\\\12=\boxed{2}\cdot\boxed{2}\cdot3\\\\56=\boxed{2}\cdot\boxed{2}\cdot2\cdot7\\\\GCF(12,\ 56)=\boxed{2}\cdot\boxed{2}=4\\\\LCM(12,\ 56)=\boxed{2}\cdot\boxed{2}\cdot3\cdot2\cdot7=168`