Question

Найдите от числа 28: 1) 12. 2) 3/7 3) 9/14 4) 19/28. /-дробь

Answer 1

1). 28 * 1/2 = 14 * 1 = 14

2). 28 * 3/7 = 4 * 3 =12

3). 28 * 9/12 = 7 * 9/3 = 63/3 = 21

4). 28 * 19/28 = 1 * 19 =19

Answer 2

28/2*1=14

28/7*3=12

28/14*9=18

28/28*19=19