7x=3x-80

Curlyben · Jun 13, 2012, 01:26 PM

Please clarify your question.
What are you trying to do ?

qwertyuioop · Jun 13, 2012, 01:28 PM

Quote:

Originally Posted by qwertyuioop

how do u do it and check it?

i have 2 solve the equation and check my answer.
And find what x is! ?
Thnx if u answer it!!

Curlyben · Jun 13, 2012, 01:29 PM

What have you done so far.
Remember you do the same action on BOTH sides..

qwertyuioop · Jun 13, 2012, 01:33 PM

7x=3x-80
7((times) how do u write times besides x)-3x+80=0
(7-3)x+80=0
4x+80=0
now the q is hoe do i continue it?

Curlyben · Jun 13, 2012, 01:40 PM

So you are here

$4x+80=0$
Just take 80 from both sides and then you'll see what to do next..

qwertyuioop · Jun 13, 2012, 01:42 PM

hu i dont get that so u add 4x+80???

Curlyben · Jun 13, 2012, 01:44 PM

You want to move the 80 to the left in the form
so you get

$4x+80-80 = -80$

Whats next ?

qwertyuioop · Jun 13, 2012, 01:49 PM

so then u divide 80 divided by 4 and u get -20???
if it correct thnx sooooo much

Curlyben · Jun 13, 2012, 01:50 PM

Do you see how that worked ?
Same action on both sides..