suma a doua numere consecutive este43 determinati numerele

Răspuns :

a + ( a + 1 ) = 43

2 × a = 43 - 1

2 × a = 42

a = 42 : 2

a = 21 →  primul numar

21 + 1 = 22 → al doilea numar consecutiv

Verific   21 + 22 = 43 → suma celor doua numere consecutive