You can use the equation x+(x+1)=73 in this situation.
This would equal to 2x+1=73, which makes 2x=72. X would be 36, and 36+37 is 73.
Basically your answer would be any two integers, starting from 37 and up.
Ex. 37+38=75 or 38+39=77, and so on.
Only positive numbers can apply to this question because any number consecutive to a negative number would *definitely* be less than 73.