Răspuns :
C+L+S=614
C=3L
S=L+19
inlocuiesti C si S in relatia C+L+S=614
3L+L+L+19=614
5L=595
L=119
C=3L=119 ori 3=357
S=L+19=119+19=138
deci: Camelia are 357 de prune, Lidia are 119, iar Stela are 138
C+L+S=614
C=3L
S=L+19
inlocuiesti C si S in relatia C+L+S=614
3L+L+L+19=614
5L=595
L=119
C=3L=119 ori 3=357
S=L+19=119+19=138
deci: Camelia are 357 de prune, Lidia are 119, iar Stela are 138