a)
[tex]6 \frac{2}{5} \div \frac{8 }{25} = \frac{32}{5} \times \frac{25}{8} = \frac{4}{1} \times \frac{5}{1} = 20[/tex]
b)
[tex]9 \frac{1}{2} \div 4 = \frac{19}{2} \times \frac{1}{4} = \frac{19}{8} = 2 \frac{3}{8} [/tex]
c)
[tex] \frac{4}{5} \div \frac{3}{7} = \frac{4}{5} \times \frac{ 7 }{3} = \frac{28}{15} = 1 \frac{13}{15} [/tex]
d)
[tex] \frac{1}{8} \times 2 \frac{7}{10} = \frac{1}{8} \times \frac{27}{10} = \frac{27}{80} [/tex]
e)
[tex] \frac{3}{6} \times x = \frac{3}{18} | \times 18 \\ 9 \times x = 3 | \div 9 \\ x = \frac{3}{9} [/tex]
Myślę że pomogłem ;)
