SBP-Program

f

tw

in

How to subtract fractions?

How do you subtract fractions?

Let's look at some examples.

Example 1.

Subtract fractions:

2 - 1
55

We always subtract the numerator and the numerator if the denominators are the same.

Subtract the numerator 2 from the numerator 1:

2 - 1 = 2 - 1 = 1
5555

The result of the subtraction of the fractions:

2 - 1 = 1
555

Example 2.

Subtract fractions:

1 - 1
35

These two fractions have different denominators.

We have to find a common denominator for the fractions. It is 15.

We multiply the numerator 1 and the denominator 3 of the first fraction by 5:

1 * 5 = 5
3 * 515

We multiply the numerator 1 and the denominator 5 of the second fraction by 3:

1 * 3 = 3
5 * 315

And now we can subtract the two fractions.

Subtract the numerator 5 from the numerator 3:

5 - 3 = 5 - 3 = 2
15151515

Answer:

1 - 1 = 2
3515