Odpowiedź:
[tex]a)2 \frac{14}{22} + \frac{3}{22} = 2 \frac{17}{22} [/tex]
[tex]b)2 \frac{8}{14} + 1 \frac{3}{14} = 3 \frac{11}{14} [/tex]
[tex]c)7 \frac{42}{90} + 2 \frac{20}{90} = 9 \frac{62}{90} [/tex]
[tex]d)8 \frac{6}{21} + 1 \frac{7}{21} = 9 \frac{13}{21} [/tex]
