(13/21+3/14): 10/27
1) 13/21 + 3/14 = 26/42 + 9/42 = 35/42 2) 35/42 : 10/27 = 27/12 = 9/4 = 2 1/4 = 2,25 Ответ 2,25 ( или 2 1/4 )