To subtract these radicals together their radicands must be the same:

6\( \sqrt{112} \) - 7\( \sqrt{7} \)
6\( \sqrt{16 \times 7} \) - 7\( \sqrt{7} \)
6\( \sqrt{4^2 \times 7} \) - 7\( \sqrt{7} \)
(6)(4)\( \sqrt{7} \) - 7\( \sqrt{7} \)
24\( \sqrt{7} \) - 7\( \sqrt{7} \)

Now that the radicands are identical, you can subtract them:

To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 300 meters to kilometers, divide the distance by 1000 to get 0.3km then add the remaining distances:

total distance = swim + bike + run
total distance = 0.3km + 50.1km + 7.5km
total distance = 57.9km

A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.

The greatest common factor (GCF) is the greatest factor that divides two integers.

To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:

\( \sqrt{\frac{64}{81}} \)
\( \frac{\sqrt{64}}{\sqrt{81}} \)
\( \frac{\sqrt{8^2}}{\sqrt{9^2}} \)
\(\frac{8}{9}\)