помогите пожалуйста))

(3/15-2 7/25):1 2/25 +1 4/15=
(15/75-2 21/75): 27/25 +1 4/15=
-2 6/75 : 27/25 +1 4/15=
-156/75 * 25/27 +1 4/15=
-52/3*9 + 1 4/15=
-52/27 + 1 4/15=
-1 25/27 + 1 4/15=
-1 125/135 + 1 36/135=
-89/135