Răspuns:
[tex]12 = {2}^{2} \times 3 \\ 16 = {2}^{4} \\ 48 = {2}^{4} \times 3 \\ c.m.m.m.c = {2}^{4} \times 3 = 16 \times 3 = 48 \\ \\ 15 = 3 \times 5 \\ 20 = {2}^{2} \times 5 \\ 60 = {2}^{2} \times 3 \times 5 \\ c.m.m.m.c = {2}^{2} \times 3 \times 5 = 4 \times 3 \times 5 = 12 \times 5 = 60 \\ \\ 18 = 2 \times {3}^{2} \\ 24 = {2}^{3} \times 3 \\ 36 = {2}^{2} \times {3}^{2} \\ c.m.m.m.c = {2}^{3} \times {3}^{2} = 8 \times 9 = 72 \\ \\ 12 = {2}^{2} \times 3 \\ 21 =3 \times 7 \\ 28 = {2}^{2} \times 7 \\ c.m.m.m.c = {2}^{2} \times 3 \times 7 = 4 \times 3 \times 7 = 12 \times 7 = 84[/tex]
sper că te-am ajutat!
