5/12 — 1/4 is your equationSo first you need to mind a common denominator between the two, which here is 12. This changes 1/4 to 3/12 (since you multiply both top and bottom by 3 to make 12) So you rewrite the question like this 5/12 — 3/12 and solve and get 2/12 After that you simply to finally get 1/6