10 Ag0 + 2 KMnVIIO4 + 8 H2SO4 5 Ag2ISO4 + 2 MnIISO4 + K2SO4 + 8 H2O

This is an oxidation-reduction (redox) reaction:

2 MnVII + 10 e- 2 MnII (reduction)

10 Ag0 - 10 e- 10 AgI (oxidation)

KMnO4 is an oxidizing agent, Ag is a reducing agent.