Polynomial (algebra) Is my work correct?
(4/7y^2-1/5y^2+7/9) + (1/3y^2-1/3y+2/5) This problem is suppose to be in vertical form.
When I get common denominators, combine like terms, and add like terms in a column....
My answer: 19/21y^2-8/15y+53/45
I feel as if I'm doing something wrong. 
Comments
I have checked your coefficients. They are CORRECT!!!