Hey there!
NaClO → NaCl + O₂
We can see that there are the same amount of Na and Cl on each side, but there is a different amount of O.
One on the left, two on the right. Add a coefficient of 2 in front of NaClO.
2NaClO → NaCl + O₂
Now O is balanced, but Na and Cl are not.
Add a coefficient of 2 in front of NaCl.
2NaClO → 2NaCl + O₂
This is our final balanced equation.
Hope this helps!