19-21/120 помогите решить!

Question

19-21/120
помогите решить!

Answer 1

19 - 21/120 = 18 120/120 - 21/120 = 18 99/120 = 18 33/40

Answer 2

19 - 21/120 = 19 - 0,175 = 18,825 или 19 - 21/120 = 2280/120 - 21/120 = 2259/120 = 18 99/120 = 18 33/40.