Răspuns:a)14=7*2 si 21=7*3
=>(14,21)=7*3*2=42
(14,21)={42,84,126,168,210
b)6=3*2 si 54=3*3*3*2
=>(6,54)=3*3*3*2=54
(6,54)={54,108,162,216,270}
c)10=5*2 si 12=3*2*2
=>(10,12)=5*3*2*2=60
(10,12)={60,120,180,240,300}
d)18=3*3*2 si 27=3*3*3
=>(10,12)=3*3*3*2=54
(10,12)={54,108,162,216,270}
Explicație pas cu pas:Sper ca te-am ajutat!!Nu ma supara o coronitza ;-;
Sper ca nu am gresit cu nimic...