How can combine the balanced half-reactions

Question

Divide the following reaction into half-reactions, balance the half-reactions, and combine the balanced half-reactions into the balanced overall equation for the reactions. Another common analysis for iron is titration of iron (II) with potassium dichromate, K₂Cr₂O₇.

Fe²⁺ + Cr₂O₇^2- +H⁺ = Fe³⁺ + Cr₃+ +H₂O