Răspunsuri

2014-06-03T19:45:47+03:00
  • Utilizator Brainly
2014-06-03T19:47:18+03:00
a+357-428=209
a+357=209+428
a+357=637
a=280
 

a-457+376=287
a-833=287
a=287+833
a=1120