It looks like you're adding two fractions: $\frac{20}{3} + \frac{16}{7}$.

To solve this, we need to find a common denominator, then add the fractions. The least common denominator (LCD) of 3 and 7 is 21. So we rewrite the fractions with 21 as the denominator:

$\frac{20}{3} = \frac{20 \times 7}{3 \times 7} = \frac{140}{21}$ $\frac{16}{7} = \frac{16 \times 3}{7 \times 3} = \frac{48}{21}$

Now we can add them:

$\frac{140}{21} + \frac{48}{21} = \frac{140 + 48}{21} = \frac{188}{21}$

This is the sum of the two fractions.

The fraction $\frac{188}{21}$ is already in its simplest form.

Would you like more details or have any questions?

Here are 5 related questions to expand on this:

1. How do you find the least common denominator (LCD)?
2. Can you convert $\frac{188}{21}$ into a mixed number?
3. How do you subtract two fractions?
4. How do you multiply two fractions, for example $\frac{20}{3} \times \frac{16}{7}$?
5. What happens if the fractions have a common denominator already?

Tip: When adding or subtracting fractions, always check if you can simplify the final answer!