To evaluate the expression -5n - m for m = -3 and n = -1, we can substitute the values of m and n into the expression:
\[ -5n - m = -5(-1) - (-3) \]
Now, let's simplify it step by step:
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Calculate \(-5(-1)\): \(-5 \times -1 = 5\)
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Calculate \(-(-3)\): This gives us \(+3\).
So, we have:
\[ -5n - m = 5 + 3 \]
Now, add the two results together:
\[ 5 + 3 = 8 \]
Thus, the value of the expression for m = –3 and n = –1 is 8.