НОК(8,16и20) с ришением!)

 

К (8) = {8,16,32,40,48,56,64,72,80}К (16) = {16,32,48,64,80}К (20) = {20,40,60,80}НОК(8,16,20) = 80 Еще вариант:8=2*2*216=2*2*2*220=2*2*5НОК(8,16,20) = 2*2*2*2*5=80

НОК(8,16И20)=20*5=1008/2=4/2=2/2=1; 16/2=8/2=4/2=2/2=1; 20/2=10/2=5/5=1