2)
7+6=13 lei
1: o bancnotă de 10 lei+3 bancnote de 1 leu
2: 6 monede de 50 bani si 2 bancnote de 5 lei
3: 10 bancnote de 1 leu si 30 de monezi de 10 bani
4)a)6 sticle x 2l=12l
2 sticle x 3l=6l
3 sticle x 2l=6l
4 sticle x3l=12 l
B) 1 litru - 18 sticle
Jumatate de litru-36 sticle
