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Carmenconstantin
a fost răspuns

afla numerele a b c stiind ca a+b=3820 a+c=2950 b+c=1230

Răspuns :

a+b+a+c=3820+2950
2a+b+c=6770
2a+1230=6770=>2a=6770-1230=>a=5540:2=>a=2770
b=3820-2770=>b=1050
c=1230-1050=>c=180

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