Answer:
5/6
Explanation:
Simplifying fractions is basic divide the Numerator (Top Number) and Denominator (Bottom Number) by the same LCD ( Lowest Common Denominator), in this sense it is 2. We can always start slow and work our way up but by using 2 we can do (10/2=5) and (12/2=6) then put them together and we get 5/6. 5/6 is in it's lowest term.
Numbers like 30/40 can go even lower. All the way to 3/4 by dividing by 10.
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-Vy