Răspunsuri

2014-04-03T22:59:15+03:00
A+b+c=111
a+18=b
a+12=c
a+a+18+a+12=111
3a+30=111
3a=81
a=27  b=45  c=39
2 5 2
  • Utilizator Brainly
2014-04-03T23:16:12+03:00
A.I_____I
b.I_____I+18
c.I_____I+12

Suma este 111 . Aflam suma partilor egale :
 111-30=81
 81:3=27 ( numarul a )
 27+18=45 ( numarul b )
 27+12=39 ( numarul c )

Verificare : 27+45+39=111