Algebra 1

$1$ or $\frac{8}{8}$
When we are adding fractions with like denominators, we simply add the numerators and put the sum of the numerators over the denominator. When the add the numerators, 3 and 5, we get 8. We put this sum over the denominator, which is 8, and end up with $\frac{8}{8}$, which is equal to 1.