How do you balance #CaCO_3 + H_3PO_4 -> Ca_3(PO_4)_2 + CO_2 + H_2O#?
Solved below pal...
There are lots of methods to balance a chemical equation such as a simple inspection , ion-electron, reduction-oxidation(Redox), algebraically** and so on.
For this reaction , we simply use the inspection method:
I'd advice you to start off with metallic elements or ions.