Question

How do you simplify `-55n + 28n + 21n + 7n - n`?

Answer 1

`0`

Explanation:

These are all like terms. Simplify into one term, taking the positive and negative terms into consideration.

`-55n + 28n + 21n + 7n - n`

= `color(blue)(28n + 21n + 7n)color(red)( -55n - n)`

= `color(blue)(56n)color(red)( -56n)`

= `0`