Explicație pas cu pas:
a+b+c=948
b=3/4a+18
c=2/3b=2/3×(3/4a+18)=6/12a+18=1/2a+2/3×18=1/2a+12
a+3/4a+18+1/2a+12=948
4a+3a+72+2a+48=3792
9a=3672:9
a=408
b=3/4×408+18=324
c=1/2×408+12=216
Eu am calculat asa,o metoda mai usoara! Sper ca te.am ajutat!
