Răspunsuri

  • Utilizator Brainly
2014-09-16T20:50:12+03:00
2014-09-16T20:50:25+03:00
A +b =637
a -189 =b 
a____/ +189
b____/
637-189 =448
448 / 2 =224
b =224
a =224 +189
a =413
proba: 413 +224 =637