Ответы и объяснения

2013-01-15T07:21:18+00:00
2013-01-15T07:22:32+00:00

1 1/2 : k = 19/4 : 19/8

 

1 1/2 : k = 19/4 * 8/19

 

1 1/2 : k = 2

 

k = 1 1/2 : 2

 

k = 1 1/2 * 1/2

 

k = 3/2 * 1/2

 

k = 3/4