# Solving for x

1. Aug 9, 2009

### GrandMaster87

1. The problem statement, all variables and given/known data

Hi .

I found this in my textbook. I want to know how they got to the answer. I really dont know how they got it.

$$\frac{\frac{x}{2}}{0.40-\frac{x}{2}}$$= 6.8 x 10-2
x= 0.0272 - 0.068x
x= 0.025

2. Relevant equations
N/A

3. The attempt at a solution
i just dont know where to start or how to solve this.

Last edited: Aug 9, 2009
2. Aug 9, 2009

### rootX

Multiply both sides by 0.4-x/2

3. Aug 9, 2009

### GrandMaster87

thanks...cant believe the solution was so simple...sometimes the easiest things become so mind boggling