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Mathematics 13 Online
OpenStudy (anonymous):

Add 8+x-1/x+4

hero (hero):

\[8 + \frac{x-1}{x+4} \space \text{right?}\]

OpenStudy (anonymous):

yes

hero (hero):

\[\text{What happens if you multiply 8 by} \space \frac{x+4}{x+4} \space ? \]

OpenStudy (anonymous):

it would be 8x+32 right?

hero (hero):

For the numerator, yes. Then you would have: \[\frac{8x + 32}{x+4} + \frac{x-1}{x+4}\] Now what do we do?

OpenStudy (anonymous):

uhm i think you cross multiply right?

hero (hero):

You can only do that when you have two fractions on opposite sides of an equal sign.

OpenStudy (anonymous):

oh okay

hero (hero):

All we need to do is add, right?

hero (hero):

If you had \[\frac{8}{3} + \frac{4}{3}\] How would you add that?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

so 12/6?

hero (hero):

What grade are you in?

OpenStudy (anonymous):

8

hero (hero):

You should know how to add fractions by now. You learn that in second or third grade.

OpenStudy (anonymous):

yeah i know im dumb thanks

hero (hero):

So I guess you give up then?

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