Make up the electronic equations of oxidation and reduction processes, arrange the coefficients by the electronic

Make up the electronic equations of oxidation and reduction processes, arrange the coefficients by the electronic balance method: KMnO4 + Na2SO3 + H2O = MnO2 + KOH + Na2SO4

Mn has a charge of +7
S has a charge of + 4
After equals Mn has a charge of +4
S has a charge of + 6
Oh-l | Mn + 7 – Mn + 4 | 7-4 = 3
V-l | S + 4 – S + 6 | 4-6 = 2
We get 3 and 2, then bring them to the total number is 6 and divide 6: 2 = 3
6: 3 = 2 for Mn we get coefficient 2 and S coefficient 3
2kmno4 + 3na2so3 + h2o = 2mno2 + 2koh + 3na2so4