In the above sum i.e if d is the hcf of 56 and 72 find x ,y satisfying d =56x+72y. Also show that x and y are not unique.........how to show x and y are not unique because in r.d Sharma the value of x and y are different why?

If there is only one value of x and y possible that satisfy the given equation then its called unique solution but here as you can see there are so many value of (x,y) are possible that satisfy the given equation so its not unique
like x=4,y=-3
x=-68,y=53...