math help

What is 31/12 - 8/12?

What is 31/12 - 8/12?

Here's how to subtract 8/12 from 31/12:

31
12
 −
8
12

Step 1

Since our denominators match, we can subtract the numerators.

31 − 8 = 23

So the answer is:

23
12

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...

Nope! So now we try the next greatest prime number, 5...

Nope! So now we try the next greatest prime number, 7...

Nope! So now we try the next greatest prime number, 11...

Nope! So now we try the next greatest prime number, 13...

No good. 13 is larger than 12. So we're done reducing.

There you have it! The final answer is:
31
12
 −
8
12
 =
23
12

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