You need to know and understand how to do these yourself. So rather than give you the balanced equations, I will tell you that
a)S changes oxidation state from +4 on the left to +6 on the right. Mn changes its oxidation state from +7 on the elft to +2 on the right.
b)S changes oxidation state from 2 (for each S) on the left to +6 on the right.
Cl changes from zero on the left to -1 on the right.
If this doesn't help all that much, tell me what you don't understand about how to balance redox equation.