Answer:

Explanation:
So we have

If you have the same denominator for each fraction, you'd be able to subtract the numerators like regular subtraction
Seeing the 2/3, if we multiply each number by 2, you get

Now you have 5/6 and 4/6. Since they both have 6 at the bottom, you can subtract 5 and 4.
5-4=1
Now you have 1/6.
Then you can just subtract the 18 and 16 like normal giving you 2.
After we combine our numbers, we get 2 1/6. Hope this helps