1/2 + 2/x = 3/4

(x+4)/(2x) = 3/4

4x + 16 = 6x

2x = 16

x = 8

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- Sep 14th 2009, 01:23 AM #1

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- Sep 2009
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## Need a little help.

I need help with the below problems. I don't understand how to find the common denominator when there is a variable as a denominator.

How do I work this on paper?

1/2 + 2/x = 3/4

Another problem I need help with is the below. I was able to figure out the answer, which is 29/10 but if I plug that into x to check the problem I have no clue how to work that.

x+1 over 3 + x+2 over 7 = 2

Thanks for your time,

KN

- Sep 14th 2009, 02:25 AM #2

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- Sep 2009
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- Sep 14th 2009, 07:21 AM #3