1.
[tex] \frac{12}{66} [/tex]
2.
[tex] \frac{7}{23} + \frac{19}{46} - \frac{5}{23} - \frac{7}{46} = (aduci \: fractiile \: la \: acelasi \: numitor) \\ = \frac{14}{46} + \frac{19}{46} - \frac{10}{46} - \frac{7}{46} = \\ \frac{14 + 19 - 10 - 7}{46} = \\ \frac{16}{46} = \frac{8}{23} [/tex]
3. not. g-grau,p- porumb,f-floarea soarelui,l-legume
[tex]g = \frac{11}{56} \\ p = \frac{13}{56} \\ f = \frac{1}{7} [/tex]
a.
[tex]g + p = \frac{11}{56} + \frac{13}{56} = \frac{11 + 13}{56} = \frac{24}{56} = \frac{3}{7} [/tex]
b. legumele reprezinta restul suprafetei,deci vor fi diferenta dintre suprafata totala si suma celorlalte alimente
unde suprafata totala este 56/56
[tex]l = \frac{56}{56} - (g + p + f) = \frac{56}{56} - ( \frac{11}{56} + \frac{13}{56} + \frac{1}{7} ) = \\ \frac{56}{56} - ( \frac{24}{56} + \frac{1}{7} ) = \frac{56}{56} - ( \frac{24}{56} + \frac{8}{56} ) = \frac{56}{56} - \frac{32}{56} = \frac{56 - 32}{56} = \frac{24}{56} = \frac{3}{7} [/tex]
