hi guyz, need your help to explain how we go the base of 69,000 for the second example
A owns investment land with an adjusted basis of $50,000, FMV of $70,000, but which is subject to a mortgage of $15,000. B owns investment land with an adjusted basis of $60,000, FMV of $65,000, but which is subject to a mortgage of $ 6,000. A and B exchange real estate investments with A assuming B’s $6,000 mortgage and paying cash of 4000, and B assuming A’s $15,000 mortgage. :