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Daca a+b=15 si b+c=14 calculati 3a+5b+2c.

Răspuns :

a=5
b=10
5+10=15
c=4
10+4=14
3a+5b+2c=
5•3=15
10•5=50
4•2=8
15+50=65+8=73
3a+5b+2c=73
15+50+8=73
Sper ca te-am ajutat