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urgeent dau coroana​

Urgeent Dau Coroana class=

Răspuns :

Răspuns:

a+b+c=375

b=15+a

b=c-18 c=b+18

inlocuim:

a+15+a+15+a+18=375

3a+48=375

3a=375-48

3a=327

a=327:3

a=109(primul concurent)

b=15+109=124(al doilea concurent)

c=124+18=142(al treilea concurent)