Multiply and Divide Integers: example 1.47

Multiply: ⓐ $−1 \cdot 7$ ⓑ $−1 (−11) .$

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Multiply: ⓐ $−1 \cdot 9$ ⓑ $−1 \cdot (−17) .$

How did it go?

ⓐ Multiply, noting that the signs are different so the product is negative.	$\begin{matrix} −1 \cdot 7 \\ −7 \\ −7 is the opposite of 7 . \end{matrix}$
ⓑ Multiply, noting that the signs are the same so the product is positive.	$\begin{matrix} −1 (−11) \\ 11 \\ 11 is the opposite of −11 . \end{matrix}$