[tex] \frac{7}{23} + \frac{19}{46} - \frac{5}{23} - \frac{7}{46} = \\ amplificam \: fractiile \: cu \: numitorul \: 23 \: cu \: 2 \\ = \frac{14}{46} + \frac{19}{46} - \frac{10}{46} - \frac{7}{46} \\ = \frac{33}{46} - \frac{10}{46} - \frac{7}{46} \\ = \frac{23}{46} - \frac{7}{46} \\ = \frac{16}{46} \\ se \: simplifica \: prin \: 2 \\ = \frac{8}{23} [/tex]
Mult succes!
