math help

What is 5/12 - 2/5?

What is 5/12 - 2/5?

Here's how to subtract 2/5 from 5/12:

5
12
2
5

Step 1

We can't subtract two fractions with different denominators. So you need to get a common denominator. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.

So we multiply 5 by 5, and get 25.

Then we multiply 2 by 12, and get 24.

Next we give both terms new denominators -- 12 × 5 = 60.

So now our fractions look like this:

25
60
24
60

Step 2

Since our denominators match, we can subtract the numerators.

25 − 24 = 1

So the answer is:

1
60

Step 3

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...

No good. 2 is larger than 1. So we're done reducing.

There you have it! The final answer is:
5
12
2
5
=
1
60