Question

Daca 5a=6b,calculaţi a/b.

Answer 1

Metoda 1: 
$5a=6b => \frac{a}{b} =\frac{6}{5}$ (pentru ca 5a reprezinta produsul extremilor, iar 6b reprezinta produsul mezilor).

Metoda 2:
5a=6b => a=$\frac{6b}{5}$
$\frac{a}{b} = \frac{ \frac{6b}{5} }{b} = \frac{6b}{5}* \frac{1}{b}= \frac{6}{5}$