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  • Utilizator Brainly
2014-05-29T14:36:46+03:00
A+b+c=610
a+b=470
b+c=490

470+c=610
c=610-470
c=140

a+490=610
a=610-490
a=120

120+b=470
b=470-120
b=350

Verificare : 120+350+140=610