From the sum of $- 38$ and $- 12$ subtract $- 18$ .

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Solution

Step 1: Let's add $- 38$ and $- 12$ .
If the given numbers are of like signs, let's add the absolute values directly and give the common sign for the result.
$- 38 + (- 12) = (- 50)$
Step 2: Now let's subtract $- 18$ from $- 50$
Here, the additive inverse of $- 18 = 18$
So add this to $- 50$
If the given numbers are of unlike signs, let's subtract the absolute values directly and give the sign of the largest absolute valued integer to the result.
$\begin{array}{rcl} - 50 - (- 18) & = & - 50 + (18) \\ = & - 32 \end{array}$
Hence, the answer is $- 32$

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