Odpowiedź :
Zad. 1
a) [tex]\frac{9}{5} = 1 \frac{4}{5}[/tex]
b) [tex]\frac{17}{4} = 4 \frac{1}{4}[/tex]
c) [tex]6 \frac{5}{7} = 5 \frac{12}{7}[/tex]
d) [tex]3 = 2 \frac{3}{3}[/tex]
Zad. 2
b) [tex]\frac{5}{7} + \frac{6}{7} = \frac{11}{7} = 1 \frac{4}{7}[/tex]
c) [tex]2 \frac{2}{5} + \frac{4}{5} = 2 \frac{6}{5} = 3 \frac{1}{5}[/tex]
Zad. 3
a) [tex]\frac{2}{3} + \frac{1}{4} = \frac{8}{12} + \frac{3}{12} = \frac{11}{12}[/tex]
b) [tex]\frac{5}{9} + \frac{3}{5} = \frac{25}{45} + \frac{27}{45} = \frac{52}{45} = 1 \frac{7}{45}[/tex]
c) [tex]\frac{2}{3} + \frac{4}{5} = \frac{10}{15} + \frac{12}{15} = \frac{22}{15} = 1 \frac{7}{15}[/tex]
d) [tex]\frac{5}{8} + \frac{3}{7} = \frac{35}{56} + \frac{24}{56} = \frac{59}{56} = 1 \frac{3}{56}[/tex]
e) [tex]1 \frac{1}{2} + 2 \frac{3}{8} = 1 \frac{4}{8} + 2 \frac{3}{8} = 3 \frac{7}{8}[/tex]
f) [tex]\frac{2}{9} + 1 \frac{7}{27} = \frac{6}{27} + 1 \frac{7}{27} = 1 \frac{13}{27}[/tex]
g) [tex]1 \frac{5}{6} + 3 \frac{1}{9} = 1 \frac{15}{18} + 3 \frac{2}{18} = 4 \frac{17}{18}[/tex]
h) [tex]2 \frac{1}{10} + 3 \frac{7}{15} = 2 \frac{3}{30} + 3 \frac{14}{30} = 5 \frac{17}{30}[/tex]
Mam nadzieję, że pomogłam! :)