5 1/13 -3 6/13=? 7 2/15-(4-37/15)+2 12/15=?

1) 5 1/13 - 3 6/13 = 4 14/13 - 3 6/13 = 1 8/13 2) 7 2/15 - (4 - 3 7/15) + 2 12/15 = 7 2/15 - (3 15/15 - 3 7/15) + 2 12/15 = = 7 2/15 - 8/15 + 2 12/15 = 6 17/15 - 8/15 + 2 12/15 = 8 21/15 = 9 6/15 = 9,4