Fixed Capital Investment Calculations between, Investment, difference, periods

meghanjackson

SImple subject, but seems to trip me up. Can anyone explain how to calculate FCInv for the FCF calculations when it isnt given straight up? I know we can find the difference in Gross PPE between periods if there were no purhcases or sales. For some reason i always mess it up when there are disposals and purchases so would appreciate any tips.