Question

2. Stiind ca 3 carti si 4 pixuri costa 50 de lei, iar 2 carti si 2 pixuri costa 30 de
lei, aflati cat costa 3 carti si 2 pixuri.

VA ROG URGENT!!!! DAU COROANA! ​

Answer 1

3carti + 4pixuri = 50lei
2carti + 2pixuri = 30lei (amplificam cu 2)
4carti + 4pixuri = 60lei

4c - 3c = 1c
4p - 4p = 0p
60lei - 50lei = 10lei

1c + 0p = 10lei
1c = 10lei
3c = 10•3
3c = 30lei

3carti + 4pixuri = 50lei
30lei + 4p = 50lei
4p = 50-30
4p = 20lei

1p = 20:4
1p = 5
2p = 10lei

Răspuns: 3 carti = 30lei
2 pixuri = 10lei

Sper ca te-am ajutat