Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Carlos read 28 books in July and 30 books in August.  He needed to read 100 books during his summer vacation. If Carlos read some of the books in June, calculate the number of books that Carlos read in June to meet his goal?

### Response:
 Carlos alisoma vitabu 28 + vitabu 30 = <<28+30=58>>58.
Alikuwa anahitaji kusoma vitabu 100 - vitabu 58 = <<100-58=42>>42 mwezi Juni.