Question

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.

Answer 1

ill give it a shot

Answer 2

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.

Answer 3

k give me a sec

Answer 4

Alright :)

Answer 5

I know what x is

Answer 6

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.

Answer 7

you cross multiply to find x

Answer 8

then plug x back in

Answer 9

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

Answer 10

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

Answer 11

you messed up

Answer 12

on the left it should be 20x+10

Answer 13

yea but you started off correct

Answer 14

yes

Answer 15

Oh, okay! That makes sense. Whoops.

Answer 16

now retry

Answer 17

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

Answer 18

yea he's right

Answer 19

I got 3. Is that right?

Answer 20

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

Answer 21

yes three is right for x

Answer 22

yes thats what i got

Answer 23

Okay, thank you! :)

Answer 24

now plug it back in

Answer 25

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.

Answer 26

oh jk 3 is right

Answer 27

you got it?

Answer 28

Yes, I think so. Thank you!

Answer 29

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

Answer 30

Thank you too @atreyu6s3x6

Answer 31

i wish i could medal myself