I need to make e the subject of the formula

T = n(1+e) / (1-e)

Forgot how to do these complicated ones (Headbang)

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- Feb 5th 2011, 11:14 AMNatasha1Make e the subject of the formula
I need to make e the subject of the formula

T = n(1+e) / (1-e)

Forgot how to do these complicated ones (Headbang) - Feb 5th 2011, 11:28 AMearboth
1. Multiply both sides of the equation by (1 - e)

2. Expand the brackets on both sides.

3. Collect all terms containing e at the LHS of the equation, all others at the RHS:

$\displaystyle -T \cdot e - n \cdot e = n - T$

4. Factor out e at the LHS.

5. Divide both sides of the equation by -( T + n) - Feb 5th 2011, 11:34 AMNatasha1
On point 4 you get e (- n - T) = n - T don't you?

- Feb 5th 2011, 11:35 AMNatasha1
Oh so e = - 1 is this correct?

- Feb 5th 2011, 11:39 AMearboth
- Feb 5th 2011, 11:43 AMNatasha1
Thanks