Question

Fill in the missing digits, given that no digit is repeated.
_ _ _+807=_5_

(_ means missing number)

Answer 1

start with the middle term
_+0=5
what are the 2 possibilities ?

Answer 2

note, that you need to consider any carry from unit's place if any

Answer 3

or, lets take the hundred's place,
since we don't have a carry in final answer, we have only one possible combination
for _+8=_
note : we cannot use 0 again, so its not 0+8=8

Answer 4

DOODLE DOODLE!