Question

a+b+c=28
a+b=16
b+c=12
afla fiecare numar

Answer 1

daca a=b=c=28 si a=b=16
c=28-16
c=12
daca b+c=12
b=12-12
b=0
daca a=b=16
a=16-0
a=16

Answer 2

a+b=16 => c=28-16 => c=12; b+c=12 si c=12 => b=0 => a+0+12=28 => a=28-12 => b= 16. Verificare: 16+0+12=28