Algebra 2 question! Please Help!!!?

Question

I'm trying to explain this to a friend but I haven't done it in a while... please explain to me how to do this one question... I need to re charge my memory lol....

3x - 3 3

2 8 x = 4

sorry if it doesn't show up like fractions like I tried to type them... it should be...

3x/2 - 3/8 x = 3/4

Answer 1

Multiply by the LCD which in this case is 8x. So multiply every fraction by 8x and you get 12x^2-3=6x

then you move 6x to the left side and get 12x^2-6x-3=0

then divide all the terms by 3 so you get 4x^2-2x-1=0

then you have to simplify by using the quadratic formula.

your answers then will be {2+2 square root of 5, 2-2square root of 5}

Answer 2

okay...its been a while for me too..but i tried..lets see if anyone gets the same as me : )

3x/2 - 3x/8 = 3/4

(2)3x/2 - 3x/8 = 3/4  (when you multiply by 2 then the 2 in the first fraction will cancel and the 8 in the second fraction will become a 4.)

like this:

6x - 3x/4 =3/4

then youll want to multiply by 4 on each side:

(4)6x - 3x/4 = 3/4 (4)

this equals:

24x - 12x = 3

then you will divide by 12:

24x - 12x = 3

_____________

     12

equals:

2x - x = 3/12

x = 1/4

i hope thats right lol..sorry if its not..i tried!