Question

49/60 - 1 = ?
сколько?

Answer 1

49/60 - 1 = -(60/60-49/60)=-11/60
Примечание: 1 = 60/60

Answer 2

Будет - 11/60.
49/60 - 1 = 49/60 - 60/60 = -11/60.
:3