Re: Solution to simple algebraic equation

"unclemuffin" <unclemuffin@[EMAIL PROTECTED]
> wrote in message 
news:3d2903bc-2950-44ca-bd3f-cc061ca67c95@[EMAIL PROTECTED]
> It has been a long time since I made a C in Algebra in high school.  I
> guess I should have paid more attention because I have a real life
> problem that needs algebra to solve.
>
> my equation:
>
> a = (b - (c + (d * b))) / c
>
> solve for b
>
> Any help would be appreciated,
>
> Brent

a = (b - c - (d * b)) / c                distribute subtraction over (c +
(d 
* b))
a * c = b - c - (d * b)                  mpy both sides by c
-b + (d * b) = - (a * c) - c           move both terms containing b to
left 
side, others to right side
b * (-1 + d) = - c * (a + 1)          factor out b on left side, factor
out 
c on right side
b = (- c * (a + 1)) / (-1 + d)        divide both sides by (-1 + d)
b = (c * (a + 1)) / (1 - d)             mpy both numer and denom of right 
side by -1 to look cleaner

Tim