Ta có:
\(28=2^2\cdot7\\48=2^4\cdot3\)
\(\Rightarrow\left\{{}\begin{matrix}UCLN\left(28;48\right)=2^2=4\\BCNN\left(28;48\right)=2^4\cdot3\cdot7=336\end{matrix}\right.\)
Ta có:
\(28=2^2\cdot7\)
\(48=2^4\cdot3\)
\(\RightarrowƯCLN\left(28;48\right)=2^2=4\)
\(\Rightarrow BCNN\left(28;48\right)=2^4\cdot3\cdot7=336\)