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Mathematics 9 Online
OpenStudy (anonymous):

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OpenStudy (anonymous):

\[\frac{d+3}{8d}-\frac{2d+1}{10d^2}= \frac{10d(d+3)-8(2d+1)}{80d^2}\]

OpenStudy (anonymous):

can you solve from here?

OpenStudy (anonymous):

Yes but how come its not 80d^2?

OpenStudy (anonymous):

cubed I mean!

OpenStudy (anonymous):

denominator is 80d^2

OpenStudy (anonymous):

Yea but why is it not 80 cubed

OpenStudy (anonymous):

\[\frac{10d(d+3)-8(2d+1)}{80d^2}\] yes denominator is 80d^2

OpenStudy (anonymous):

or you can write this way is the same mean \[\frac{10d(d+3)}{80d^2}-\frac{8(2d+1)}{80d^2}\]

OpenStudy (anonymous):

\[\frac{10d^2+30d}{80d^2}-\frac{16d+8}{80d^2}\]

OpenStudy (anonymous):

K got it. Then i get 10d^2 +14d+8 over 80 d ^2?

OpenStudy (anonymous):

10d^2 +14d-8 over 80 d ^2?

OpenStudy (anonymous):

So then how would i simplify that?

OpenStudy (anonymous):

internet problem I have restart

OpenStudy (anonymous):

oh ok

OpenStudy (anonymous):

let me work on my paper

OpenStudy (anonymous):

kk

OpenStudy (anonymous):

didision by 8 you get internet have a problem again

OpenStudy (anonymous):

(5d^2+7d-4): 40d^2

OpenStudy (anonymous):

so u divided by 8?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

divided top and bottom by 8

OpenStudy (anonymous):

but eight divided into 80 is 10?

OpenStudy (anonymous):

sorry divide by 2 not 8

OpenStudy (anonymous):

I have to go

OpenStudy (anonymous):

k thanks but whats the final answer??

OpenStudy (anonymous):

(5d^2+7d-4) /( 40d^2) the final answer

OpenStudy (anonymous):

Thanks bye

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