How do you simplify #8/12+1/6#?
We can do this in a couple of ways. The trick to this is that we need the denominators to be the same. (Remember that the denominator tells you how many pieces something is divided into - and so having 2 identical pizzas divided into 12 pieces for the one and 6 pieces into the other won't give us identically sized slices. We need to know that we are working with the same size!)
Let's do it one way - increase the 6 to a 12:
We could also do it the other way and reduce the denominator 12 fraction to a 6 first: