How do you add \frac { - 5} { 9v ^ { 3} w ^ { 2} } + \frac { 3} { 4v ^ { 2} w }?

1 Answer
Oct 9, 2017

=(-20+27vw)/(36v^3w^2)

Explanation:

We would sum the fractions by finding the LCM of their denominators, that's

LCM(9v^3w^2;4v^2w)=36v^3w^2

and reduce them to one fraction:

(-5(4)+3(9vw))/(36v^3w^2)

=(-20+27vw)/(36v^3w^2)