# Fractional Numbers

Would it be possible to replace the letter X with a natural number that makes the sentence below true?

5 . X = 1

Replacing Xwe have:

X by 0, we have: 5.0 = 0
X for 1, we have: 5.1 = 5

Therefore, replacing X by any natural number, we will never find product 1. To solve this problem, we have to create new numbers. Thus arise the fractional numbers.

Every equivalent fraction represents the same fractional number.

So a fraction (n nonzero) and all fractions equivalent to it represent the same fractional number .

Now solving the initial problem, we conclude that X = , because .

Next: Addition and Subtraction of Fractional Numbers