Răspuns :
păi leau dat toți cate o nucă scade 5-1=4
3-1=2
2-1=1
aduni 4+2+1=7nuci
fiecare a dat cate o nuca , daca le-a ramas 7 nuci .
Marin: 5-1=4 nuci
Nicu : 3-1=2 nuci
Ion : 2-1=1
4+2+1=7 nuci ( cate aveau impreuna ramase)
Marin: 5-1=4 nuci
Nicu : 3-1=2 nuci
Ion : 2-1=1
4+2+1=7 nuci ( cate aveau impreuna ramase)