Answer:
An easy way to tell with a number like this is that both numbers are round, so they can both be divided by 2
Step-by-step explanation:
You can tell that it is not simplified if they are both even, as they can be divided by 2, or really, if both numbers have a common factor as a divisor.
For example, 3/6 has a common of factor by 3, 3/3 / 3/6 = 1/2.
