Răspuns :
a+b+c=819
a=4b
c=a-2b=>c=4b-2b=> c=2b
4b+b+2b=819
7b=819
b=117
a=4*117 => a=468
c=2*117 => c=234
a=4b
c=a-2b=>c=4b-2b=> c=2b
4b+b+2b=819
7b=819
b=117
a=4*117 => a=468
c=2*117 => c=234
a+b+c=819
a=4b
c=(a-2b)=>c=4b-2b=>c=2b
4b+b+2b=819
7b=819
b=819:7
b=117
a=4b
a=4*117
a=468
c=2*117
c=234
a=4b
c=(a-2b)=>c=4b-2b=>c=2b
4b+b+2b=819
7b=819
b=819:7
b=117
a=4b
a=4*117
a=468
c=2*117
c=234