# Math Help - Equation Manipulation

1. ## Equation Manipulation

Please manipulate these equations as specified, so that I can compare them to the other problems I need to do.

1. (w/v) = (g/(v-w)) to get 1/v + 1/w = 1/g
2. (w - g) = f²(1/(v-g)) into 1/v + 1/w = 1/g

2. ## More information please

Hello Audaciity
Originally Posted by Audaciity
Please manipulate these equations as specified, so that I can compare them to the other problems I need to do.

1. (w/v) = (g/(v-w)) to get 1/v + 1/w = 1/g
2. (w - g) = f²(1/(v-g)) into 1/v + 1/w = 1/g
I think you must have misunderstood the questions here. Are $f$ and $g$ functions? Give us the complete question please, because what you have written here doesn't make sense.

Grandad

3. They are equations, not functions.

I am asking people to show the steps to rearrange (and manipulate) the equations.

How do I get from w/v = g/(v-w)
to 1/v + 1/w = 1/g ?

How do I get from w-g = f²(1/(v-g))
to 1/v + 1/w = 1/g ?

4. Hello Audaciity
Originally Posted by Audaciity
I am asking people to show the steps to rearrange (and manipulate) the equations.

How do I get from w/v = g/(v-w)
to 1/v + 1/w = 1/g ?

How do I get from w-g = f²(1/(v-g))
to 1/v + 1/w = 1/g ?
I have already replied to your question. Unless you have anything further to tell me, I repeat: the question doesn't make sense.

Grandad

5. Originally Posted by Audaciity
Please manipulate these equations as specified, so that I can compare them to the other problems I need to do.

1. (w/v) = (g/(v-w)) to get 1/v + 1/w = 1/g
2. (w - g) = f²(1/(v-g)) into 1/v + 1/w = 1/g
The point Grandad was making is that you can't change from one to the other, they simply aren't equivalent. From w/v= g/(v-w), you can get that 1/g= v/(w(v-w)) but that is NOT equal to 1/v+ 1/w.

The second one has an "f" in it but the equation you want to change it into doesn't. Again, that is NOT possible.