ƯCLN(180;280)=20
BCNN(180;280)=2520
\(180=2^2.3^2.5\\ 280=2^3.5.7\)
\(=>UCLN\left(180;280\right)=2^2.5=20\\ BCNN\left(180;280\right)=2^3.3^2.5.7=2520\)
\(180=2^2.3^2.5\\ 280=2^3.5.7\)
\(ƯCLN\left(180;280\right)=2^2.5=4.5=20\\ BCNN\left(180;280\right)=2^3.3^2.5.7=2520\)