This is the concept of algebra. The simplified form of the expression will be:
(8w³-10w²y^5)/(8w³x³)
=[2w²(4w-5y^5)]/[2w²(4wx³)]
2w² will cancel out and we shall remain with:
(4w-5y^5)/(4wx³)
The simplified form of our original expression will therefore be:
(4w-5y^5)/(4wx³)