Here are the solutions to the daily startup problems with explanations:
I have 4 groups of 6 black chips.
4x6 = 24
I have 4 groups of 6 red chips.
4x6 = 24
I owe 4 groups of 6 black chips.
-4x6 = -24 (Owing chips is a negative amount)
I owe 4 groups of 6 red chips.
-4x6 = -24 (Owing chips is a negative amount)
In the first two situations, having chips is a positive amount. In the last two situations, owing chips is represented as a negative amount since it is a debt that is owed.