Question

1. library books

the school library received a donation of 120 new books. this increased their total collection to 1,540 books.
question: using ( b ) to represent the number of books the library had before the donation, write an equation to find ( b ).

Explanation:

Step1: Analyze the relationship

The number of books before donation (\(b\)) plus the donated books (120) equals the total after donation (1540).

Step2: Write the equation

So the equation is \(b + 120 = 1540\).

Answer:

\(b + 120 = 1540\)