# How to Find Common Denominators Using the Backwards Z Method?

The "backwards Z" method is an easy way to find common denominators of two or more fractions. Have a pencil ready.
http://www.wikihow.com/Find-Common-Denominators-Using-the-Backwards-Z-Method

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## How to Find Least Common Denominators?

A denominator is the bottom number of a fraction in mathematics. In order to add or subtract fractions from one another you must first find the least common denominator, also referred to as the low... Read More »
http://www.ehow.com/how_8201741_least-common-denominators.html

## How to Find Common Denominators Then Subtract?

Fractions are mathematical expressions used to describe a specific part of a whole, such as one-fourth (1/4) of the pizza was gone, and to identify ratios, such as two out of three (2/3) girls like... Read More »
http://www.ehow.com/how_8153084_common-denominators-then-subtract.html

## How to Find the Least Common Denominator of a Pair of Fractions With Different Denominators?

A fraction consists of a set of numbers denoting the relationship of a part to a whole. The top number is referred to as the numerator, and the bottom number as the denominator. If you are going to... Read More »
http://www.ehow.com/how_8418014_least-pair-fractions-different-denominators.html

## What is the approximate amount of time that it would take to crack each type of hash, by any common method?

I don't fully understand what you're referring to by "cracking the hash".MD5, Sha-256...There are literal tons of different hash algorithms, and your goal when "hacking" is not to crack a hash. A ... Read More »

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