posted by Roxxy on .
Adding and Subtracting Rational Expressions
there are two problems I get stuck with towards the end.
1) 5n/3 + 4n/3
now i get stuck, i think that I must factor it more but i am unsure, my teacher said I incorrectly distribute the signs?
2) 7/x-5 - 2+x/x-5
for this one I get an answer of -1
1) 5n/3 + 4n/3 = 9n/3
9n/3 = 3n
2)7/(x-5) - (2+x)/(x-5) = (7-2+x)/(x-5)