11 1/3 : ((1 1/14 - 4 5/7) * 4 2/3 - (-1 5/6 + 3 2/9) * 9/25)решите плиз

1) 1  1/14 - 4  5/7 = 15/14 - 33/7=15/14 - 66/14 = - 51/142) -51/14 * 4  2/3 = -51/14 * 14/3 = -173) - 1  5/6 + 3  2/9 = - 11/6 + 29/9 = -33/18 + 58/18 = 25/184) 25/18 * 9/25 = 1/25) -17 -1/2 = -17  1/26) 11 1/3 : (-17  1/2) = 34/3 : (-35/2) = 34/3 * (-2/35)=- 68/105