Find the difference: 3-(-9)
A. -12
B. -6
C. 6
D. 12
I got the answer on (D)12 but I am not 100% sure becuase they ask the difference, not the sum.
They are asking you the difference because of the subtraction sign. Since
- X - = +, D is the answer.
To find the difference between two numbers, you simply subtract the second number from the first number.
In this case, you have 3 as the first number and -9 as the second number.
So, 3 - (-9) can be rewritten as 3 + 9.
3 + 9 equals 12, so the correct answer is D. 12.
To find the difference between two numbers, you subtract one number from the other. In this case, you want to find the difference between 3 and -9.
To solve this, follow these steps:
1. Start with the first number, which is 3.
2. Subtract the second number, which is -9.
3. To subtract a negative number, you can think of it as adding the positive number. In this case, subtracting -9 is the same as adding 9.
4. 3 + 9 = 12.
So, the difference between 3 and -9 is 12. Therefore, the correct answer is option D.