Question

Please, tell me if I do it right when calculating the expected rate of return on equity of a company after a merger:
1. Calculate separately unlevered Betas of pre-merger entities.
2. Calculate unlevered beta of post-merger entity by weighining average of betas, where weighs are respectively companies' market values.
3. Calculate the levered beta od post-merger entity using sum of market debt and equity of equiring company+issued equity for the purchase.