What is 80/2 - 1/2?

Here's how to subtract 1/2 from 80/2:

Step 1

Since our denominators match, we can subtract the numerators.

80 − 1 = 79

So the answer is:

Step 2

Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?

To find out, we try dividing it by 2...

Nope! So now we try the next greatest prime number, 3...

No good. 3 is larger than 2. So we're done reducing.