Question

exercitiul 9 pls dau coroana

Answer 1

e simplu, desfaci numerele in baza 10, adica ecuatia va arata asa: (10000a + 1000b + 100c + 10d+ c - 100(10b + c) - (10d + e):10^4 = 7; desfacem parantezele; (10000a + 1000b + 100c + 10 d + c - 1000b -100c -10d - e):10^4 = 7; acum  se vor anula multi termeni(e exemplu + 1000b - 1000b, +100c - 100c) si o sa ramana 10000a:10^4 = 7; 10000a : 10000 = 7; a = 7;