math help

What is 7/10 - 3/10?

What is 7/10 - 3/10?

Here's how to subtract 3/10 from 7/10:

7
10
3
10

Step 1

Since our denominators match, we can subtract the numerators.

7 − 3 = 4

So the answer is:

4
10

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...

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:

4
10
÷ 2 =
2
5

Let's try dividing by 2 again...

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

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

There you have it! The final answer is:
7
10
3
10
=
2
5