Posted by Alex on Tuesday, September 28, 2010 at 9:43am.
Add and subtract the rational expressions as indicated. Be sure to express your answer in simplest form
((9)/(7x)) + ((1)/(2y)) 1
I got an aswer of (16y)/(7x+2y+1)) but when I submit it shows me as wrong. Can anyone help, thanks

Algebra  Reiny, Tuesday, September 28, 2010 at 9:53am
9/(7x) + 1/(2y)  1
has a common denominator of 14xy
so ...
= (18y + 7x  14xy)/(14xy)
(Did you really ADD the denominators???)