 
<translate> Brianna tana karanta littattafai biyu a wata. A wannan shekara, an ba ta sababbin littattafai shida a matsayin kyauta, ta sayi sababbin littattafai takwas, kuma tana shirin karɓar sababbin littattafai biyu ƙasa da waɗanda ta saya daga laburaren. Da yawa daga cikin tsofaffin litattafanta daga tsohuwar tarin litattafanta za ta sake karantawa don samun littattafai biyu da za ta karanta a wata a wannan shekara? Wani tunani? Dalili na mataki zuwa mataki: <eng> Brianna reads two books a month. This year, she was given six new books as a gift, she bought eight new books, and she plans to borrow two fewer new books than she bought from the library. How many of her old books from her old book collection will she have to reread to have two books to read a month this year?
Thoughts? Step-by-step reasoning: 