a: (a) \( \frac{5}{3}+\frac{2}{3} \)

Let's break it down! When you add fractions with the same denominator, you simply combine the numerators while keeping the denominator the same. So, \( \frac{5}{3} + \frac{2}{3} = \frac{5 + 2}{3} = \frac{7}{3} \). You’ve just turned two simple fractions into an even cooler one! Now, if you want to express \( \frac{7}{3} \) as a mixed number, you can divide 7 by 3. That gives you 2 with a remainder of 1. So, \( \frac{7}{3} \) can be rewritten as \( 2 \frac{1}{3} \). Math can be magical, turning fractions into mixed numbers!