El determinante de una matriz de 3x3 Utilizando el método Laplace
0 -1 2
A= 1 2 -1
-1 2 -1

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?