Odpowiedź:
A)
[tex]5 \frac{3}{11} + 7 \frac{8}{11} = 13 [/tex]
B)
[tex]4 \frac{7}{8} - 2 \frac{3}{8} = 2 \frac{4}{8} = 2 \frac{1}{2}[/tex]
C)
[tex] \frac{3}{4} + \frac{1}{5} = \frac{15}{20} + \frac{4}{20} = \frac{19}{20} [/tex]
D)
[tex]10 \frac{1}{6} - 2 \frac{1}{3} = 10 \frac{1}{6} - 2 \frac{2}{6} = 7 \frac{5}{6} [/tex]
E)
[tex]7 \times \frac{3}{14} = \frac{21}{14} = 1 \frac{7}{14} = 1 \frac{1}{2} [/tex]
F)
[tex] \frac{4}{7} \div \frac{8}{21} = \frac{4}{7} \times \frac{21}{8} = \frac{1}{1} \times \frac{3}{2} = 1\frac{1}{2} [/tex]
G)
[tex]( \frac{5}{9} + \frac{1}{2} ) \times \frac{1}{3} = ( \frac{10}{18} + \frac{9}{18} ) \times \frac{1}{3} = \frac{19}{18} \times \frac{1}{3} = \frac{19}{54} [/tex]
