Can you represent the oxidation of sulfite ion, #SO_3^(2-)#, to give sulfate ion, #SO_4^(2-)#, accompanied by the reduction of #Cu^(2+)# to copper metal?
When basic conditions are specified, it is normally best to balance the equations in acid, and then modify the final equations.
For basic conditions, add
You have asked another such question recently. Do you follow the method of doing redox equations?