You have two points given by $(w,x)$ and $(y,z)$. Can $(w,x)$ be transformed into $(y,z)$ by only performing the operations $(w+x,x)$ and $(w,x+w)$? $w,x,y,z$ are integers greater than or equal to $1$.
I thought this was a simple system of equations:
$w+a\times x = y$
$x+b\times w = z$
Given $w,x,y,z$ we can solve for $a$ and $b$, check if there integers or not and be done. However, this doesn't seem to be the case.
Am I missing something here?