7/21 can still be represented as 1/3,
3/12 can still be represented as 1/4,
2/26 can still be represented as 1/13, but
9/13 can not be represented in any simpler way.
So, if I ask a student to find among these 4 fractions the one that cannot be represented in a simpler way, what adjective should I use in this question:
Which one of the following options is a ________________ fraction?
Should it be:
most basic ?