Well you will need two number that are divisible by 30 and add up to -7 so they will have to be a negative.
I would try -2 and -5 which are both divisible by 30 and ad up to -7 so...
-2/30 + -5/30 = -7/30
Do you need any one PARTICULAR example? If yes, then it would be:
-740/17 + 10 / 17
keep the denominator same, which would not be divisible by numerator; and sum of numrerator should be equal to -730