Question

76:_=(ост.6)_:_=(ост.5)​

Answer 1

76:10=7(ост.6)
55:10=5(ост.5)

Answer 2

The expression "76: (ост.6) : _(ост.5)" appears to be a mathematical or symbolic equation. However, it is not clear what "ост.6" and "ост.5" represent since there is no context provided. It would be helpful if you could provide additional information or clarify the meaning of "ост.6" and "ост.5" so that I can assist you better.