Fractii egale cu fractiile date obtinem ptin amplificare:
[tex]a) \frac{23}{53}= \frac{46}{106}= \frac{69}{159}= \frac{92}{212} [/tex]
[tex]b) \frac{19}{61} = \frac{38}{122}= \frac{57}{183}= \frac{76}{244}= \frac{95}{305} [/tex]
[tex]c) \frac{13}{89}= \frac{26}{178}= \frac{39}{267}= \frac{52}{356}= \frac{65}{445}= \frac{78}{534} [/tex]
