Subtract 12−(−8).
To subtract a negative number, we can change it to addition and change the sign of the number. Therefore, subtracting $12-(-8)$ is the same as adding $12+8$.
$12+8=20$
So, $12-(-8)=20$.
To subtract 12 from -8, you need to change the sign of 12 and then add it to -8.
So, subtracting 12−(−8) can be rewritten as -12 + (-8).
Now, add -12 and -8:
-12 + (-8) = -20.
Therefore, subtracting 12−(−8) equals -20.