Equity method Income and Investment

Value of investment = beginning value + share of NI - share of Div - Amort of FV excess over BV of PPE

Income = share of NI - share of unsold inventory profit - share of Amortisation of Assets?

Is this one correct? Or should it be just unsold inventory (without profit)?

And should it be just amortisation/depreciation of Assets by their BV? So it leaves us with different amortisation for Value of investment formula and different amortisation for income calculation?