Question

-2n-1(9-10n). please help

Answer 1

Hey there!☺

`Answer:\boxed{8n-9}`

`Explanation:`

`-2n-1(9-10n)`

Step 1: Distribute.

`-2n+(-1)(9)+(-1)(-10n)\\-2n+-9+10n`

Step 2: Combine like terms.

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

Answer:

`8n-9`

Hope this helps!☺