common denominator

Question

How do I find a common denominator for problems which include variables like

4t/9w^2 + 5/6wt

Answer 1

To get a common denominator for the two expressions, you need to have the same variables on the bottom. so, you need w^2 and t to be in the bottom.

Multiply each by 1, in the first case, t/t, and you get:

(t/t) (4t/9w^2) = 4t^2/9tw^2

(w/w) (5/6wt) = 5w/6tw^2

Oh, oops, I forgot the number, now multiply each to get 18 in the denominator (18 is the lowest common):

(2/2) (4t^2/9tw^2) = 8t^2/18tw^2

(3/3) (5w/6tw^2) = 15w/18tw^2

Now they are over common denominators.

Answer 2

i am having trouble figuring out common denominators im in 5th grade doing 7th grade math so if someone can tell me how to solve on please coment on this question!!!

Answer 3

what is the common denominator of 6 & 8?

Answer 4

what is the common denominator for 3/5 3/8 2/3?

Answer 5

which fractions is greater than 2/3

Answer 6

is there a least common denominator for 12, 7, and 6

Answer 7

what is the common denominator for 15 and 19?

Answer 8

8/9and11/12