You sell sunglasses that come in small and large boxes. the small box has one layer of sunglasses. the large box has five layers, each of which has two fewer pairs of sunglasses than a layer in the small box.
let the pair of glasses in each layer in small box= x
and the pair glasses in each layer in large box= x-2
total pair of glasses in large box= 5(x-2)
total pair of glasses in small box= 1x
