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March 31, 2015

March 31, 2015

Posted by **kate** on Saturday, February 7, 2009 at 9:03pm.

2. a number decreased by 12 is equal to 30. find the number.

3. 8 less than a number is 15. fid the number

- algebra -
**Ms. Sue**, Saturday, February 7, 2009 at 10:37pmLet x = the unknown number.

x + 21 = 28

x + 21 - 21 = 28 - 21

x = 7

x - 12 = 30

x = ?

How do you think you should set up the third problem?

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