Răspunsuri

2014-02-09T21:02:11+02:00
X+y+z=8289
x+y=4001
y+z=5099
x+y+z-x-y=8289-4001 <=> z=4288
4288+y=5099 => y=5099-4288 => y=721
2014-02-09T21:04:44+02:00
A+b+c=8289
a+b=4001
b+c=5099

Pun in prima egalitate, in loc de a+b, numarul 4001 si avem
4001+c=8289
c=8289-4001=4288
Acum b+4288=5099
b=5099-4288=811
Si acum: a+811=4001, de unde rezulta ca a=4001-811=3190