Going off the idea that this is 4/(y+2) - 9/(y-2) = 9/(y^2-4), let's first rewrite y^2-4 in the form of a^2-b^2, where a=y and b=2. y/(y+2)-9/(y-2)=9/(y^2-2^2) Now, use difference of squares: a^2-b^2=(a+b)(a-b) 4/(y+2)-9/(y-2)=9/((y+2)(y-2)) Multiply both sides by the Least Common Denominator: (y+2)(y-2) 4(y-2)-9(y+2)=9 Then keep on simplifying until you get your answer -5y-26=9 -5y=9+26 -5y=35 y=35/-5 y=-7 Yay! Our answer is y=-7!
Mandy Increases her books by 2 per month. Bill increases his books by 4 per month.
Month Mandy Bill May 18 4 June 20 8 July 22 12 August 24 16 Sept 26 20 Oct 28 24 Nov 30 28 Dec 32 32 At the end of December they will have read the same amount of books.
