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solve for x

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Source: — Problem Solving |
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by truplayer256 » Sun Feb 01, 2009 10:52 am
x=7 is incorrect. You can check your answer by plugging x=7 into the original equation:
2(7)+1/3+16=30 and 1/3
3(7)=21

30 and 1/3 doesn't equal 21..

The correct way to solve for x would be the following:

2x+1/3+48/3=3x
2x+49/3=3x
Why did you multiply the three here?
Just subtract 2x and you get x=49/3
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by vladmire » Sun Feb 01, 2009 11:26 am
I was thinking I had to have a common denominator on both sides. This makes more since. THanks
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