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  • Utilizator Brainly
2014-02-24T19:13:24+02:00
A+b+c=300
a+b=202
b+c=187

a+b+c-(a+b)=300-202
a+b+c-a-b=98
c=98
b=187-98
b=89
a=202-89
a=113
2014-02-24T19:14:31+02:00
300-202=98 lei are ultimul copil
300-187=113 lei are primul copil
300-98-113=89 lei are al doilea copil