I have no idea what the answer to your math problem is. You forgot to write it in with the question! Whoops! I guess you will either have to resubmit the question or find someone
http://www.ask.com/webanswers/Science/Mathematics...

1. Search the answers appendix at the back of the textbook. Notice that it contains at least half the answers, covering either all the odd numbered questions or the evens. Work backward
http://www.ehow.com/how_7435201_answersmathprobl...

Try BBC Bitesize, It always helps me with my maths problems.
http://wiki.answers.com/Q/What_is_a_math_website_t...

1. Addition: Even: If both addends are even. Odd: If one adddend is even, and one is odd. Even: If both addends are odd. Ad. 2. Subtraction. Even: If both subtractends are even. Odd
http://www.wikihow.com/DetermineifanAnswertoa...
