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Mathematics 17 Online
OpenStudy (anonymous):

x+7/10=2/5+x-7/3

OpenStudy (anonymous):

so the lcd is 30

hero (hero):

\[\frac{x+7}{10} = \frac{2}{5} + \frac{x-7}{3}\]

hero (hero):

@Mandy86, is that the given equation?

OpenStudy (anonymous):

yes

hero (hero):

Okay, so subtract 2/5 from both sides to get \[\frac{x+7}{10} - \frac{2}{5} = \frac{x-7}{3}\] Now multiply 2/5 by 2/2 Let me know what you get afterwards

OpenStudy (anonymous):

4/10

hero (hero):

So now you have \[\frac{x+7}{10} - \frac{4}{10} = \frac{x-7}{3}\] Combine fractions on the left side. Let me know what you get.

hero (hero):

Stuck?

hero (hero):

When you combine fractions, you'll end up with \[\frac{x+7 -4 }{10} = \frac{x-7}{3}\] Which simplifies to \[\frac{x+3 }{10} = \frac{x-7}{3}\] From there, you cross multiply. Can you do that?

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