uzupełnij ulamki
12/20
\frac{12}{20}=\frac{4}{5}
16/28
\frac{16}{28}=\frac{4}{7}
10/14
\frac{10}{14}=\frac{5}{7}
a)
10-3/5
10-\frac{3}{5}=9\frac{5}{5}-\frac{3}{5}=9\frac{2}{5}
b)
7i1/4-3i 3/4
7\frac{1}{4}-3\frac{3}{4}=6\frac{5}{4}-3\frac{3}{4}=3\frac{2}{4}=3\frac{1}{2}