Запишите числа: 1)-7; 0; 9; 12; 100 в виде дроби со знаминателями: а) 1; б) 3; 2) -3,2;...

▪1)

a)

$- \frac{7}{1} = - 7 \\ \frac{0}{1} = 0 \\ \frac{9}{1} = 9 \\ \frac{12}{1} = 12 \\ \frac{100}{1} = 100$
б)

$- \frac{21}{3} = - 7 \\ \frac{0}{3 } = 0 \\ \frac{27}{3} = 9 \\ \frac{36}{3} = 12 \\ \frac{300}{3} = 100$
▪2)

а)

$- 3.2 = - \frac{32}{10} \\ - 0.8 = - \frac{8}{10} \\ 4.5 = \frac{45}{10} \\ 83.5 = \frac{835}{10}$
б)

$- 3.2 = - \frac{3200}{1000} \\ - 0.8 = - \frac{800}{1000} \\ 4.5 = \frac{4500}{1000} \\ 83.5 = - \frac{83500}{1000}$