Question

-3m-[2m+(5-m)]+7 explain how the simplified answer: 2-4m is correct

Answer 1

Explanation:

So what you can do is first get ride of the parentheses around 5-m so:

`-3m - (2m + 5-m)+7`

Then, you can simplify the numbers inside the parentheses, so:

`-3m-(m+5) + 7`

Then, you can get rid of the parentheses by distributing the - sign:

`-3m-m-5+7`

Next, just combine like terms:

`-4m + 2` or
`2-4m`