Question

Can someone find the error and explain?

Answer 1

`\huge\boxed{\text{There is no error.}}`

Note: I have checked my work multiple times. Consider informing your teacher of this.

We have
`(10n-5)/(5)` to start.

Factor out
`5` from the top expression.
`(5(2n-1))/(5)`

Cancel out the
`5`s.
`2n-1`

`2n-1=2n-1`