Thanks for your response on the oxidation reduction it was helpful, but how do you balance equations without oxygen?
such as Cu2+Fe------->Cu+Fe2
I started out with Cu2-->Cu
and on the oxidation side Fe-->Fe2+
and what about this one?
You are correct! You want to start with the half reactions.
Cu2+ --> 2Cu
Start by balancing mass. So we need a 2 on the left:
2Cu2+ --> 2Cu
Now balance charge. We need ...
It shows how to balance the chemical reaction.