The second book in a fantasy series is 112 pages longer than the first book. the total number of pages in both books is 524. Solve the equation b+b+112=524 to find the total number of pages b in the second book.
b + b + 112 = 524
2b + 112 = 524 subtract 112 from each side
2b = 412 divide both sides by 2
b = 206
The second book has 206 + 112 = 318 pages