Question

Ajutor urgent vă rog frumos mulțumesc. Ex 6

Answer 1

a)

$\frac{9}{10} - \frac{5}{10}$

$\frac{9 - 5}{10}$

$\frac{4}{10}$

$\frac{2}{5}$

b)

$\frac{8}{8} - \frac{3}{8} + \frac{2}{8}$

$\frac{8 - 3 + 2}{10}$

$\frac{7}{8}$

c)

$\frac{4}{9} + \frac{5}{9} - \frac{6}{9}$

$\frac{4 + 5 - 6}{9}$

$\frac{3}{9}$

$\frac{1}{3}$