Odpowiedź:
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} + 1\frac{7}{15} = 2\frac{3}{30} + 1\frac{14}{30} = 3\frac{17}{30}[/tex]
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Liczę na naj ^^
