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Posted by some girl on Friday, September 14, 2012 at 6:24pm.

9 + x = 17 I know that x=8 but how did you get it Thanks

9 + x = 17 Subtract 9 from both sides of the equation. 9 - 9 + x = 17 - 9 x = 8 Remember -- you need to get the known quantities on one side and the unknown on the other side.

thanks so much!

You're very welcome.

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