Step-by-step explanation:
The journal entries are as follows
For sale of the patent
Cash Dr $750,000
To Patent $120,000
To Gain on sale of patent $630,000
(Being the sale of the patent is recorded)
For sale of the equipment
Cash Dr $325,000
Depreciation Dr $150,000
Loss on sale of an equipment $75,000
To Equipment $550,000
(Being the sale of the equipment is recorded)