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aflati suma numerelor a+b+c ..stiind ca b> decat a cu 9 si b>decat c cu 7 2c+3b+5a=369

Răspuns :

b=a+9
b=c+7
a+9=c+7
c=a+2
2c+3b+5a=369
2(a+2)+3(a+9)+5a=369
2a+4+3a+27+5a=369
10a=338
a=33,8
b=a+9=33,8+9=42,8
c=a+2=33,8+2=35,8