x=48 lei
3x=48*3=144 lei
144-13=131 lei (platesti daca iei 3 jocuri)
11:3=3 rest 2
Pret total=3*131+2*48
Pret total=393+96
Pret total=489 lei
4c+6a=440|:2
2c+3a=220
a=15+c
Inlocuim:
2c+3(c+15)=220
2c+3c+45=220
5c=220-45
5c=175
c=35 lei(o carte)
a=15+35
a=50 lei(un album)