Start with 48, then
divide by 3, get 16
add 5, get 21
divide by 3, get 7
add 5, get 12
divide by 3, get 4
add 5, get 9
divide by 3, get 3
add 5, get 8
then it gets into fractions.
Edwin
The post comes without a question, so there can be no answer....
Assuming the problem is to find the next term (or next few terms) of the sequence, another tutor has used the given numbers to determine one POSSIBLE pattern for producing the sequence: "divide by 3; add 5; repeat".
However, that is not THE answer to the problem; it is only one of an infinite number of possible answers.
ANY subsequent numbers will form a valid sequence....
In ANY problem like this, if only numbers are given, without any information about what kind of sequence it is, then there is no way to know what "the" answer is. It is only a guessing game; it is not mathematics.