Gabriella's travel shampoo bottle holds 1/2 cup of shampoo. before leaving on vacation, she filled the bottle to the top with 1/8 cup of shampoo. how much shampoo was already in the bottle?
i just need somebody to explain to me how i do this i don't even need the answer
i just need to know how to solve it

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.