Redox equations are what when the total increase in oxidation numbers equals the total decrease in oxidation numbers?

Redox equations are considered balanced when the total increase in oxidation numbers equals the total decrease in oxidation numbers. This balance ensures that the number of electrons lost in oxidation matches the number of electrons gained in reduction. By achieving this equilibrium, the conservation of charge and mass is maintained in the chemical reaction. Consequently, the overall reaction accurately reflects the transfer of electrons between species.