Answer:
m = -2
Step-by-step explanation:
Since 10 is smaller than 12, we have to subtract to get a negative number.
10 - 12 = -2
Answer:

Step-by-step explanation:
To avoid confusion, distribute the negative amongst all terms in the second set of parentheses.
I hope this helps you out alot, and as always, I am joyous to assist anyone at any time.
Yes you are correct B is the right answer