Question

How do you simplify `(4n - 4)/(6n - 20)` and what are the restrictions?

Answer 1

Restriction
`(4n-4)/(6n-20)` is only defined if
`color(white)("XXXXX")` `6n-20 != 0`
`color(white)("XXXXX")`that is if `n != 10/3`

Otherwise
`color(white)("XXXXX")` `(4n-4)/(6n-6)`

`color(white)("XXXXX")` `=(4(n-1))/(6(n-1))`

`color(white)("XXXXX")` `=4/6`

`color(white)("XXXXX")` `= 2/3`