Roberto example Fv RE

I still see the example of reboerto as very complicated .

The RE at reporting date was 20,000
What is the brought forward figure ??

RE bf should be RE at reporting date of $20,000- profit for the year of Ingrida 6,000
B/f $14,000
Profit for the 7 months 7/12*6000= $3500,

14,000 + 3500= 17500

Post Acq profit 5/12* 6000= 2500
RE @ reporting date = $20,000
RE @ acq bal =$ 17500

You see what I mean , so I do not know if there is an error on the note or not . Please, clearify me on this .

Thanks