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3 votes
Evaluate:

9 – (–12)
A. 3
B. 21
C. –3
D. –21

User Greg Woods
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2 Answers

3 votes
9-(-12)=9+12=21 answer is B❤️
User Refti
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5 votes

Answer: +19

Step-by-step explanation: In this problem we are asked to evaluate 9 - (-12).

To subtract these integers, it's important to understand that when we have minus a negative, we can change it to plus a positive.

So 9 - (-12) can be changed to 9 + (+12) or 9 + 12 which gives us a sum of 21.

Therefore, 9 - (-12) = +21.

Notice that I put the '+' sign in front of the 21. Although this is optional, it's a good idea to do especially when adding and subtracting positives and negatives. All it shows is that our answer is positive.

User Sculper
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