See the attached picture:
Oceans one ocean at a time
They are both on the 2 of the y-axis, so now all you have to do is subrtact the x-axis coordinate of R by the x-axis coordinate of T. That would be (-6)-5 = -11. YOUR ANSWER IS NOT -11. Signs don't matter when your attempting to find distance. Just forget the negative sign(-). It has nothing to do with the answer.
YOUR ANSWER IS 11 UNITS!!!
We'll it keeps on subtracting by 4 to get each number.
-2,-6,-10,-14,-18,-22,-26.
Negative 26 is your answer. Hope this helped!