Group Profit/ Loss on disposal of the sibsidiary

Dear Mentors/ Students,
Would you be so kind to tell me why in the attached example fair valur of NCI at the date of disposal has beed deducted instead of adding, please?
https://opentuition.com/acca/sbr/acca-sbr-specimen-exam-2-question-1/
In Study Notes this step of disposal requires calculation of Group Profit/ Loss on disposal of the subsidiary as follows :
Proceeds
Add: Investment still held
Add: NCI
Less: Net Assets
Less: Goodwill
So, the approach differs.
Which one is the correct?
Thank you in advance!