[tex] \frac{a}{b}= \frac{7}{5} [/tex]
7*5=35, 35<1260 ⇒ ca fractia a/b se obtine prin amplificare
amplificam fractia cu "k", obtinem [tex] \frac{7k}{5k}= \frac{a}{b} [/tex]
7k*5k=1260
35k²=1260
k²=1260:35
k²=36
k=√36
k=6
a=7*6=42
b=5*6=30
fractia obtinuta este [tex] \frac{42}{30} [/tex]
