In 2018, Partner Millwrights purchased a milling machine for $4,500, debiting Milling Equipment During 2018 and 2019. Partner recorded total amortization of $2,700 on the machine. In January 2020, Partner traded in the machine for a new one with a fair market value of $4,350, paying $3100 cash This exchange transaction has commercial substance Journalize Partner Millwrights' exchange of machines on January 15 (Record debits first, then credits. Exclude explanations from journal entries.) General Journal Accounts Debit Credit