(2,2)
(x1+x2)/2, (y1-y2)/2
(-2+6)/2=(2)
(-2+6)/2=2

Sounds like that to me but that is symbolically showing of that's what your teacher means as mathematical sentence
9:6,9/6, 9x6 156/104 , 156:104 , 156x104 because there the same thing but different signs
Suppose that the number u were thinking about is x thus :

Multiply both sides by 4



Divide both sides by 3

