Posted by **Diana** on Sunday, July 15, 2007 at 1:29pm.

subtract. express in simplest form

13x/30 - 4x/ 15 =

factor the first denominator. Get a common denominator. Combine terms.

I will be happy to critique your work.

ok

13x/30 - 4x/ 15 = This is where I get lost, I know that I have to fins the LCD but when I do that it looks like this for me

30= 2.3.5

15= 3.5

where to I go from here I have one 2, 2 3's and 2 fives.

13x/30 * 1/1= 13x/30

41/15* 2/2 = 8x/30

13x/30 - 8x/ 30 = 5x/30 = x/6

Am I getting this

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