3,6+\frac{2}{3}=3\frac{3}{5}+\frac{2}{3}=3\frac{9}{15}+\frac{10}{15}=3\frac{19}{15}=4\frac{4}{15}
b)
$4\frac{1}{8}-1,11=4,125-1,11=3,015$wyjaśnienie \frac{1}{8}=0,125
c)
2,75+\frac{2}{7}=2\frac{3}{4}+\frac{2}{7}=2\frac{21}{28}+\frac{8}{28}=2\frac{29}{28}=3\frac{1}{28}
e)
3\frac{1}{3}-3,3=3\frac{1}{3}-3\frac{3}{10}=3\frac{10}{30}-3\frac{9}{30}=\frac{1}{30}
d)
0,125-\frac{1}{9}=\frac{1}{8}-\frac{1}{9}=\frac{9}{72}-\frac{8}{72}=\frac{1}{72}
f)
1\frac{1}{5}-0,09=1,2-0,09=1,11 wyjasnienie \frac{1}{5}=0,2