1) $$ \frac{10}{9} = 1\frac{1}{9} $$
2) $$ \frac{15}{7} = 2\frac{1}{7} $$
3) $$ \frac{45}{10} = 4\frac{5}{10} = 4\frac{1}{2} $$
4) $$ \frac{52}{8} = 6\frac{4}{8} = 6\frac{1}{2} $$
5) $$ \frac{87}{21} = 4\frac{3}{21} = 4\frac{1}{7} $$
Ответ: 1) $$ 1\frac{1}{9} $$, 2) $$ 2\frac{1}{7} $$, 3) $$ 4\frac{1}{2} $$, 4) $$ 6\frac{1}{2} $$, 5) $$ 4\frac{1}{7} $$