Question

How to simplify `(4/7-(4/7)^(k+1))/(1-4/7)`?

Answer 1

`(4-7(4/7)^(k+1))/3`

Explanation:

`(4/7-(4/7)^(k+1))/(1-4/7)`

`=(4/7-(4/7)^(k+1))/(3/7)`

`=(7(4/7-(4/7)^(k+1)))/3`

`=(4-7(4/7)^(k+1))/3`