How many solutions does 2−9x=−6x+5−3x have?

What multiplys to be 1 but adds up to be 4

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?

Benjamin believes that ¼ % is equivalent to 25%. is he correct? why or why not?