Programmed Math/Decimals

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Decimals (or floating point numbers) are the oposite of fractions, where fractions take the form of a number over a number eg: \frac{1}{2} which is one half.

In decimal format this would be 0.5. Why?

Well one half of 1 is 0.5 since 0.5 * 2 is equal to 1. If we multiply the number at the bottom by the decimal we should get the number at the top. Such as:

\frac{2}{4} Is still one half. 2/4 = 0.5 since \frac{1}{2} = \frac{2}{4} and  0.5*4 = 2

So the formulae could be: \frac{a}{b}=x and thus x*b = a