Find the value of n: 7n-12=16

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Complete the steps to find 4.830 ÷ 5

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?