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April 21, 2015

April 21, 2015

Posted by **CHRIS** on Sunday, December 25, 2011 at 6:48pm.

and check this

IF three times a number decreased by 5, the result is 7. find the number.

3x-5=7

and x=4

is this right?

- Math -
**drwls**, Sunday, December 25, 2011 at 7:48pm7/(2x-6) is undefined when the denominator is zero. That would be when x = 3

Your x=4 answer to the second question is correct.

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