Question

I need help checking my answers to simplifying expressions. -2n-(9-10n)

Answer 1

We are given the following expression

`-2n-(9-10n)`

We are asked to simplify the above expression.

First of all, expand the parenthesis.

`\Rightarrow-2n-9+10n`

Now, combine the like terms together and simplify

`\begin{gathered} \Rightarrow10n-2n-9 \\ \Rightarrow8n-9 \end{gathered}`

Therefore, the simplified expression is

`8n-9`