I would think so since you have to weigh each person and then add all the weights together and then divide this number by the total number of people weighed.
Would probably mostly hinge on the actual weighing part I think for the data gathering.
So since, they are the same distance from zero, they should be the oppposite of each other so in other words, k=-h and h=-k
so k+h=(subisute)k-k=-h+h=0 because they cancel
What midpoints are you wanting to measure?
Well done mate you’re correct.
3(2y-3)=27
6y-9=27
6y=36
y=6