Add (-12) and (-15).
To solve the addition of (-12) and (-15), you simply add the two numbers together.
(-12) + (-15) = -27
To add (-12) and (-15), we simply add their values:
(-12) + (-15) = -27
Therefore, the sum of (-12) and (-15) is -27.
To add (-12) and (-15), you simply add the numbers together.
(-12) + (-15) = -27.
In this case, both numbers are negative, so their sum will also be negative. The absolute values of these numbers are 12 and 15, respectively. Since the signs are the same, the sum will have the same sign as the original numbers, which is negative. Adding the absolute values gives you the magnitude of the sum, which is 27. Therefore, the sum of (-12) and (-15) is -27.