This is an impossible equation.
The oxidation number of Mn changes from +7 to +2. But nothing else changes oxidation number.
A minor problem is that you have Na₂SO₄ on each side of the equation.
Could you have mis-typed your question?
Like Ernest said, it's very possible the question was mistyped. The closest reaction I could think of that resembles what the posted reaction was is this one:
The oxidation number of
Multiply the first equation by 2 and the second by 5 for a total of