1. The problem involves simplifying or evaluating the expression for "3 multiple (-2 -1)", which can be interpreted as multiplying 3 by the sum of -2 and -1. 2. Calculate the sum inside the parentheses: $$-2 + (-1) = -3$$. 3. Now multiply 3 by the result: $$3 \times (-3) = -9$$. 4. Therefore, the final answer is $$-9$$.