Răspuns :
[tex]\it Folosim\ formula:\\ \\ (a,\ b)\cdot [a,\ b]=a\cdot b\\ \\ (a,\ b)\cdot 60=300|_{:60} \Rightarrow (a,\ b)=5[/tex]
[tex]\it Folosim\ formula:\\ \\ (a,\ b)\cdot [a,\ b]=a\cdot b\\ \\ (a,\ b)\cdot 60=300|_{:60} \Rightarrow (a,\ b)=5[/tex]