9.
a)
[tex]9 \div 12 = \frac{9}{12} = \frac{3}{4} [/tex]
b)
[tex]108 \div 90 = \frac{108}{90} = 1 \frac{18}{90} = 1 \frac{2}{10} [/tex]
10.
a)
[tex] \frac{7}{5} [/tex]
b)
[tex]1 \frac{2}{9} = \frac{11}{9} [/tex]
Odwrotność
[tex] \frac{9}{11} [/tex]
11.
[tex]4 \div 14 = \frac{4}{14} = \frac{2}{7} [/tex]
[tex]10 \div 35 = \frac{10}{35} = \frac{2}{7} [/tex]
Myślę że pomogłem ;)
