Question

Afla doua numere consecutive impare care au suma 44

Answer 1

a+a+2=44
a+a=44-2
2a=42
a=42:2
a=21
a+2=21+2=23

Answer 2

Metoda grafica

primul numar      l----------l          } suma lor = 44
al doilea numar   l----------l+ 2 

44 - 2 = 42 → suma celor doua parti egale 

42 : 2 = 21 → primul numar impar

21 + 2 = 23 → al doilea numar impar

Verific:  21 + 23 = 44 → suma celor doua numere impare consecutive


Algebric avem:

a + ( a + 2 ) = 44
2 x a = 44 - 2 
2 x a = 42 
a = 42 : 2 
a = 21  → primul numar

21 + 2 = 23 → al doilea numar

Raspuns:  21,  23