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  • Utilizator Brainly
2014-10-07T14:13:58+03:00

a+b+c=54
c*(a+b)=0 => c=0
a=5b

5b+b+0=54
6b=54
b=9

a=5*9
a=45

7 4 7
2014-10-07T14:14:18+03:00
A+b+c=54,c(a+b)=0,a=5b
c(a+b)=0,c=0 sau:a+b=0
Daca:c=0,a+b=54,5b+b=6b=54,b=9
a=45
Daca:a+b=0,b=54,a=0,b=0
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