Question

2.Suma a doua numere este 34,primul este cu 8 mai mare

Answer 1

Răspuns:

a+b=34

a=b+8

b+8+b=34 => 2b=34-8 => 2b= 26 => b=26:2=13

a=13+8=21

21+13=34

Answer 2

Fie a si b numerele cautate

$\it a+b = 34\\\\a+8=b\\\\\text{\it inlocuim pe b in prima relatie}\\\\a+a+8=34\\\\2a+8=34\\\\2a=34-8\\\\2a=26\:\:\:|:2\\\\\boxed{\it a = 13}\\\\b = 13+8\\\\\boxed{\it b = 21}\\\\Verificare: 13+21=34\:(adevarat)$

Răspuns:     13 primul numar

                    21 al doilea numar