Question

determination numarul natural n pentru care 2n pe 3 =n+5pe4​

Answer 1

Răspuns:

2n/3=(n+5)/4

2n·4=3·(n+5)

8n=3n+15

8n-3n=15

5n=15

n=15:5

n=3

verificare:  2·3:3=(3+5):4=>2=2