 
 <translate> They both finished reading a total of 34 + 32 = 66 books. Therefore, they still have to read a total of 89 – 66 = 23 books.
The answer: 23. <ibo> Ha abụọ gụchara akwụkwọ iri atọ na anọ a gbakwụnyere iri atọ na abụọ, ya bụ, akwụkwọ iri isii na isii. N'ihi ya, ha ka ga-agụ akwụkwọ 89 <unk> 66 = 23. Azịza ya bụ: 23. 