Posted by Aly on Wednesday, October 20, 2010 at 9:55pm.
Okay 5/9 + 7/9
I know you change the denominator so
5/6 = 15/18 or 3/18
7/9 = 14/18 or 2/18
which one?

math  Ms. Sue, Wednesday, October 20, 2010 at 9:56pm
You only change the denominator when they are not the same. You don't need to change anything about those fractions  except simplify your answer.

math  Aly, Wednesday, October 20, 2010 at 10:02pm
I know I put them wrong I mean 5/6 + 7/9

math  Ms. Sue, Wednesday, October 20, 2010 at 10:04pm
5/6 = 15/18
7/9 = 14/18

math  Aly, Wednesday, October 20, 2010 at 10:07pm
which is 29/18 and so I change it to a mixed number?

math  Ms. Sue, Wednesday, October 20, 2010 at 10:18pm
Right. And then simplify.

math  Aly, Wednesday, October 20, 2010 at 10:22pm
is it 1 11/18???

math  Ms. Sue, Wednesday, October 20, 2010 at 10:27pm
Right. :)
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