Step-by-step explanation:
The two lines on either side of the number means its absolute value, which is no matter if the number inside is negative or positive it will always be positive.
The first one we take the absolute value of -3 which is 3, than multiply it by -1. -3.
2nd is absolute value of -3, which is 3.
Third follows the same steps as 1. -3.
Fourth follows same steps as 2. 3.
Fith is -1 times -3 which makes it 3.
