Question

How do you solve `\frac { 4} { 2} = \frac { n - 9} { n + 4}`?

Answer 1

`n=-17`

Explanation:

`4/2=(n-9)/(n+4)`

or

`2=(n-9)/(n+4)`

or

`2(n+4)=n-9`

or

`2n+8=n-9`

or

`2n-n=-9-8`

or

`n=-17`