Question

you can use integer counters to model \\(-2 + (-7)\\).

start with 2 negative counters.

then add 7 more negative counters.

add.

\\(-2 + (-7) = \\)

Explanation:

Count the total number of negative counters

$$ 2 \text{ negative counters} + 7 \text{ negative counters} = 9 \text{ negative counters} $$

Evaluate the sum of the negative integers

$$ -2 + (-7) = -9 $$

Answer:

Add.

\(-2 + (-7) =\) <blank>-9</blank>