Răspuns :
1) 420-204=216( clasele 1+2)
2) 296-216=80( clasa 4)
3) 216-80=136( clasa 1 si 2)
4)204-80=24( clasa 4)...........
2) 296-216=80( clasa 4)
3) 216-80=136( clasa 1 si 2)
4)204-80=24( clasa 4)...........
l+ll+lll+lV=420
l+ll+lll=296
lll+lV=204
l=ll
inlocuim cu l+ll+lll=296
avem
l+ll+lll+lV=420
296+lV=420
lV=420-296
lV=124
inlocuim cu lV=124
avem
lll+lV=204
lll+124=204
lll=204-124
lll=80
inlocuim cu lll=80
l+ll+lll=296
l+ll+80=296
l+ll=296-80
l+ll=216
l=ll
216:2=108
l=108
ll=108
lll=80
lV=124
l+ll+lll=296
lll+lV=204
l=ll
inlocuim cu l+ll+lll=296
avem
l+ll+lll+lV=420
296+lV=420
lV=420-296
lV=124
inlocuim cu lV=124
avem
lll+lV=204
lll+124=204
lll=204-124
lll=80
inlocuim cu lll=80
l+ll+lll=296
l+ll+80=296
l+ll=296-80
l+ll=216
l=ll
216:2=108
l=108
ll=108
lll=80
lV=124