I'm assuming each tickmark is 1/4 = 0.25
If that assumption is correct, then going one tickmark to the left of -3/4 lands you on -4/4 which simplifies to -1.
So -1 is one tickmark to the left of -3/4
Again, this all hinges on the assumption that each tickmark is 1/4 a unit away from its neighbor.
The number 8 would be its simplest form.<span />
N= -16.5
Subtract 33 then divide by 2
2n=-33
n=-33/2 or n=-16.5
