Find the sum. -3 + (-9)
Understand the Problem
The question is asking to find the sum of the numbers -3 and -9. This involves adding two negative numbers together.
Answer
The sum is $-12$.
Answer for screen readers
The sum of $-3 + (-9)$ is $-12$.
Steps to Solve
- Identify the numbers to add
We need to add the two negative numbers: $-3$ and $-9$.
- Add the absolute values
To add these two numbers, first find the sum of their absolute values:
$$ |-3| + |-9| = 3 + 9 = 12 $$
- Apply the negative sign
Since both numbers are negative, the sum will also be negative:
$$ -3 + (-9) = -12 $$
The sum of $-3 + (-9)$ is $-12$.
More Information
When adding two negative numbers, the result is negative, and the absolute values of the numbers are summed up.
Tips
- Sometimes, people forget that adding two negatives results in a larger negative value.
- Confusing the operation with subtraction; it's essential to remember that adding negatives leads to more negative values, not positive.
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