Răspuns:
[tex]a \: \frac{1}{8} + \frac{5}{9} + \frac{7}{8} + \frac{13}{9 } = \frac{1 + 7}{8} + \frac{5 + 13}{9} = \frac{8}{8} + \frac{18}{9} = 1 + 2 = 3[/tex]
[tex]b \: \frac{1}{5} + \frac{35}{18(18} \times \frac{54(18}{75} = \frac{1}{5} + 35(5 \times \frac{3}{75(5} = \frac{1}{5} + 7 \times \frac{3(3}{15(3} = \frac{1}{5} + 7 \times \frac{1}{5} = \frac{1}{5} + \frac{7 \times 1}{5} = \frac{1}{5} + \frac{7}{5} = \frac{8}{5} = > 1.6[/tex]
Sper ca te-am ajutat!
