Question

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

Answer 1

Step-by-step 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 $2-4m$