\[\boxed{\mathbf{737\ (737).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\textbf{а)}\ 1 = \frac{10}{10};\ \ 2 = \frac{20}{10};\ \ 3 = \frac{30}{10};\ \ 4 = \frac{40}{10};\ \ 5 = \frac{50}{10}.\]
\[\textbf{б)}\ 12 = \frac{12}{1};\ \ 12 = \frac{24}{2};\ \ \ 12 = \frac{36}{3};\ \ 12 = \frac{48}{4};\ \ \ 12 = \frac{60}{5}.\]