Как решить (1 14/17-1 1/34)* 34 (3 3/5-2 1/15)*5

1) [(1)14/17 - (1)1/34] * 34 = [ (1) 28/34 - (1)1/34] * 34 = 27/34 * 34 = 27
2)[ (3) 3/5 - (2)1/15] * 5 = [ (3)9/15 - (2)1/15] * 5 = (1)8/15 * 5 = 23/15 * 5 =
= 23/3 = (7)2/3