This reaction is a redox reaction where acetaldehyde $CH3CHO$ is oxidized to acetic acid $CH3COOH$ while silver oxide $Ag2O$ is reduced to silver $Ag$. The balanced equation for this reaction is:

2 CH3CHO + 3 Ag2O → 2 CH3COOH + 4 Ag

Overall, this reaction involves the transfer of electrons from acetaldehyde to silver oxide, resulting in the formation of acetic acid and silver.