Question

(51:3+3).4+1):3-7+13.5-15.5=

Answer 1

(51:3+3).4+1):3-7+13.5-15.5
(17+3).4 + 1):3 - 7 + 65 - 75
(20)4+1):3-7-10
(80+1):3-17
(81);3 -17
27-17
10