math help

What is 2/8 - 3/4?

What is 2/8 - 3/4?

Here's how to subtract 3/4 from 2/8:

2
8
3
4

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 2 by 4, and get 8.

Then we multiply 3 by 8, and get 24.

Next we give both terms new denominators -- 8 × 4 = 32.

So now our fractions look like this:

8
32
24
32

Step 2

Since our denominators match, we can subtract the numerators.

8 − 24 = -16

So the answer is:

-16
32

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...

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

-16
32
÷ 2 =
-8
16

Let's try dividing by 2 again...

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

-8
16
÷ 2 =
-4
8

Let's try dividing by 2 again...

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

-4
8
÷ 2 =
-2
4

Let's try dividing by 2 again...

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

-2
4
÷ 2 =
-1
2

Let's try dividing by 2 again...

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

There you have it! The final answer is:
2
8
3
4
=
1
2