a)
[tex]7 \times \frac{4}{5} = \frac{28}{5} = 5 \frac{3}{5} [/tex]
b)
[tex]5 \times 4 \frac{2}{3} = 5 \times \frac{14}{3} = \frac{70}{3} = 23 \frac{1}{3} [/tex]
c)
[tex] \frac{15}{21} \times \frac{3}{25} = \frac{3}{7} \times \frac{1}{5} = \frac{3}{35} [/tex]
d)
[tex]1 \frac{3}{4} \times 2 \frac{2}{7} = \frac{7}{4} \times \frac{16}{7} = \frac{1}{1} \times \frac{4}{1} = 4[/tex]
e)
[tex]1 \frac{19}{26} \times 1 \frac{1}{12} = \frac{45}{26} \times \frac{13}{12} = \frac{15}{2} \times \frac{1}{4} = \frac{15}{8} = 1 \frac{7}{8} [/tex]
Myślę że pomogłem ;)
