Răspuns
6p+15s=550.5
7p+10s=425.5
Inmultind prima relatie cu 2 si a doua cu 3 obtinem:
21p+30s= 1276.5
12p+30s=1101
Le scadem si obtinem:
9p=175.5
p=19.5 lei
Inlocuim in a doua relatie:
7*19.5+10s=425.5
10s=289
s=28.9
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Răspuns
6p+15s=550.5
7p+10s=425.5
Inmultind prima relatie cu 2 si a doua cu 3 obtinem:
21p+30s= 1276.5
12p+30s=1101
Le scadem si obtinem:
9p=175.5
p=19.5 lei
Inlocuim in a doua relatie:
7*19.5+10s=425.5
10s=289
s=28.9