Представь число в виде дроби с указанным знаменателем 9 17/51= 12/27= 1/3= 10/15= 2 4/12= 16/18= 2/6= 20/36= 15/27= 26/39=

Представим число в виде дроби с указанным знаменателем 9:

1) 17/51 = 17/(17 * 3) = 1/(1 * 3) = 1/3 = 1 * 3/(3 * 3) = 3/9;

2) 12/27 = (4 * 3)/(9 * 3) = (4 * 1)/(9 * 1) = 4/9;

3) 1/3 =  (1 * 3)/(3 * 3) = 3/9;

4) 10/15 = (2 * 5)/(3 * 5) = (2 * 1)/(3 * 1) = 2/3 = (2 * 3)/(3 * 3) = 6/9;

5)  2 4/12 = 2 1/3 = (2 * 3 + 1)/3 = 7/3 = (7 * 3)/(3 * 3) = 21/9;

6) 16/18 = (2  * 8)/(2 * 9) = 8/9;

7)  2/6 = 1/3 = 3/9;

8) 20/36 = (4 * 5)/(9 * 4) =  5/9;

9) 15/27 = (3 * 5)/(3 * 9) = (1  * 5)/(1 * 9) = 5/9;

10) 26/39 = (2 * 13)/(3 * 13) = 2/3 = (2 * 3)/(3 * 3) = 6/9;  

11) 7/21 = 7/(7 * 3) = 1/3 = (1 * 3)/(3 * 3) = 3/9;

12) 1 1/3 = 4/3 = (4 * 3)/(3 * 3) = 12/9.