To find how far Omar walked on the two days combined, we simply add the two distances together:

$\frac{7}{8} + \frac{1}{2}$

First, we need to get a common denominator. The denominators are 8 and 2, and the least common denominator (LCD) is 8.

Now, we rewrite $\frac{1}{2}$ with a denominator of 8:

$\frac{1}{2} = \frac{4}{8}$

So, the addition becomes:

$\frac{7}{8} + \frac{4}{8} = \frac{7 + 4}{8} = \frac{11}{8}$

This is an improper fraction, which we can convert into a mixed number:

$\frac{11}{8} = 1 \frac{3}{8}$

Thus, Omar walked a total of $1 \frac{3}{8}$ miles on Friday and Saturday combined.

Would you like more details or have any questions?

Related Questions:

1. How do you add fractions with different denominators?
2. What is an improper fraction, and how do you convert it to a mixed number?
3. How can you subtract fractions with different denominators?
4. How would you multiply fractions?
5. What is the difference between a proper and an improper fraction?

Tip: Always look for the least common denominator (LCD) when adding or subtracting fractions. This simplifies the process.