Rachel had to complete 31 pages of math homework. If she had to complete 16 more pages of math homework than reading homework How many pages did she have to complete in all?
1. Rachel had to complete 31 pages of math homework.
2. She had to complete 16 more pages of math homework than reading homework.

That means that if we add 16 to the number of pages of reading homework she had to complete, we'll get the total number of pages she had to complete. So:

3. If we add 16 to the number of pages of reading homework she had to complete, we'll get the total number of pages she had to complete.

4. We don't know how many pages of reading homework she had to complete, so we'll call that number "x."

5. So the equation we need to solve is: x + 16 = 31

6. We can solve this equation by subtracting 16 from both sides. When we do that, we get: x = 15

7. So Rachel had to complete 15 pages of reading homework.

8. And since she had to complete 16 more pages of math homework than reading homework, that means she had to complete 31 pages of math homework.