Answer:
Dr Equipment account 50,000
Dr Loss on Exchange account 30,000
Dr Accumulated Depreciation Equipment account 40,000
Cr Equipment account 120,000
Explanation:
Old equipment is being disposed off, so it should be credited (equipment is an asset account, and when asset decrease they are credited).
New equipment is being purchased, so it should be debited (equipment is an asset account, and when asset increase they are debited).