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Posted by **dorothy** on Wednesday, January 12, 2011 at 3:03pm.

- math -
**helper**, Wednesday, January 12, 2011 at 3:10pm7/9 - x = 1/36

find LCD, LCD = 36

28/36 - x = 1/36

28/36 - 1/36 = x

27/36 = x

reduce fraction

3/4 = x

- math -
**Ms. Sue**, Wednesday, January 12, 2011 at 3:11pm7/9 - x = 1/36

7/9 - 1/36 = x

28/36 - 1/36 = x

27/36 = x

Divide 27 and 36 by 9.

27/36 = 3/4

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