Răspuns :
|---|+|---|---|+|---|---|---|---|=91 91:7=13 castane a adunat Maria 13×2=26 castane a adunat Andrei 26×2=52 castane a adunat Ciprian. Verificare:13+26+52=39+52=91. Ai grija cum scrii!!!succes la teme!!!
91:7=15 castane a cules Ciprian
13x2=26 castane a cules Andrei
4x13=52 maria
13+26+52=91 de castane in total
13x2=26 castane a cules Andrei
4x13=52 maria
13+26+52=91 de castane in total