Rachel had to complete 18 pages of math homework. If she had to complete 9 more pages of math homework than reading homework How many pages did she have to complete in all?
1. Rachel had to complete 18 pages of math homework.
2. If she had to complete 9 more pages of math homework than reading homework, that means she had 9 more pages of math homework than reading homework. 
3. So if we add 9 more pages of math homework to the 18 pages of math homework she already had to do, that would give us a total of 27 pages of math homework. 
4. Now, if she had 9 more pages of math homework than reading homework, that would mean she had 9 less pages of reading homework. 
5. So if we subtract 9 pages of reading homework from the 18 pages of reading homework she already had to do, that would give us a total of 9 pages of reading homework. 
6. Now we just have to add 27 pages of math homework to 9 pages of reading homework to get our final answer of 36 pages of homework in total.