Question

Please help me with this question

Answer 1

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

Explanation:

Here we have , to make e as subject of formula and given expression is:

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

⇒
`T = (n(1+e))/((1-e))`

⇒
`T(1-e) = (n(1+e))/((1-e))(1-e)`

⇒
`T(1-e) = n(1+e)`

⇒
`T-T(e)= n+n(e)`

⇒
`T-T(e)+T(e)= n+n(e)+T(e)`

⇒
`T= n+e(T+n)`

⇒
`T- n=e(T+n)`

⇒
`e=(T- n)/(T+n)`

Therefore,
`e=(T- n)/(T+n)` .