Put parentheses around the top and the bottom: Multiply top and bottom by LCD Distribute the in the top and in the bottom: 覧覧覧覧覧覧覧覧覧覧 Simplify the two terms in the top and the two terms in the bottom: If you like you can factor out 6 on the top as but there is no reason to, because doing so does not allow anything else to be canceled. Edwin