## Algebra Rule 4

#### Dividing the denominator equals multiplying the numerator

**Description:**

In the same fashion as the above rule, *dividing* the denominator of a fraction has the same effect as *multiplying* the numerator

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**Howdy!** Here are a few very handy rules of algebra. These basic rules are useful for everything from figuring out your gas mileage to acing your next math test — or even solving equations from the far reaches of theoretical physics. *Happy calculating!*

```{a \over ({b \over c})} = {ac \over b}```

In the same fashion as the above rule, *dividing* the denominator of a fraction has the same effect as *multiplying* the numerator

```{1 \over ({6 \over 2})} = {1 \over 3} = {(1*2) \over 6}```

Algebra rules is a project by two of the folks who run The Autodidacts.

A couple of autodidact math enthusiasts, we were looking for all the rules of basic algebra concisely presented in one place. We couldn’t find such a place, so we made **Algebrarules.com**

These simple rules — applied with a pinch of imagination and a dash of arithmetic — can divide, conquer, and solve just about any practical algebra problem.

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