Defined as a set of points equidistant from a given point

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Ineed if you could explain and give me the answer you! this needs done