- anonymous

Can someone help me with this problem? I don't want the answer, I just want help. I'll post the question in the comments. It's a proportion question.

- schrodinger

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- anonymous

ill give it a shot

- anonymous

##### 1 Attachment

- anonymous

I tried doing it myself and got 65/35. But that doesn't match one of the answer choices and it couldn't be simplified to one of those.

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## More answers

- anonymous

k give me a sec

- anonymous

Alright :)

- anonymous

I know what x is

- anonymous

Do you know how to solve it? I want to write it in my notes so I know how to do it later if a similar question comes up.

- anonymous

you cross multiply to find x

- anonymous

then plug x back in

- anonymous

alright you want the answer or do you wanna learn how solve it?

- anonymous

I want to know how to solve it. This is what I did but I think I did it wrong somewhere.

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- anonymous

you messed up

- anonymous

on the left it should be 20x+10

- anonymous

yea but you started off correct

- anonymous

yes

- anonymous

Oh, okay! That makes sense. Whoops.

- anonymous

now retry

- anonymous

I'll do it again and see what I get.

- anonymous

yea he's right

- anonymous

I got 3. Is that right?

- freckles

this not too much shorter but notice if you multiply the fraction on the left hand side by 7/7 you will have the same denominator on both sides and therefore you can just set the numerators equal on both sides and solve for x:
that is:
7(x-1)=4x+2

- anonymous

yes three is right for x

- anonymous

yes thats what i got

- anonymous

Okay, thank you! :)

- anonymous

now plug it back in

- anonymous

Does the question just want 3 or is it asking to plug in? I thought it just wanted 3. I'll plug in for x and see what I get.

- anonymous

oh jk 3 is right

- anonymous

you got it?

- anonymous

Yes, I think so. Thank you!

- anonymous

i believe its just 3 cause its C buty good job man

- anonymous

Thank you too @atreyu6s3x6

- anonymous

i wish i could medal myself

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