(2 4_9 -2,8) : 4_15 =???

Question

(2 4_9 -2,8) : 4_15 =???

Answer 1

(22/9 - 28/10):4/15= (110/45 - 126/45):4/15= -16/45:4/15= -16/45*15/4= -4/3= -1 1/3