Cześć!
Szczegółowe wyjaśnienie:
a)
[tex] \frac{2}{5} + \frac{1}{5} = \frac{3}{5} [/tex]
b)
[tex] \frac{5}{23} + \frac{13}{23} = \frac{5 + 13}{23} = \frac{18}{23} [/tex]
c)
[tex] \frac{3}{7} + \frac{2}{7} = \frac{5}{7} [/tex]
d)
[tex] \frac{1}{4} + \frac{1}{4} = \frac{2}{4} = \frac{1}{2} [/tex]
e)
[tex] \frac{2}{5} + \frac{2}{5} = \frac{4}{5} [/tex]
f)
[tex] \frac{5}{11} + \frac{4}{11} = \frac{9}{11} [/tex]
g)
[tex] \frac{3}{9} + \frac{5}{9} = \frac{8}{9} [/tex]
h)
[tex] \frac{4}{33} + \frac{4}{33} = \frac{8}{33} [/tex]
