Sal defines ratios. Then he shows how to write ratios three different ways. This concept is then demonstrated with four examples for finding quantities by using ratios.

Sometimes you'll need to solve an equation with multiple variables on each side. This step-by-step tutorial will show you how to set your equation to 0, factor out the GCF, simplify, write your answers as a set, then plug and chug to...

Use prime factorization to find the greatest common factor of three given values. Okay. But what if there doesn't seem to be any integer that is common in all three given values? Well, then, the greatest common factor must be 1. Not sure...

Here's a quick review on how to use a prime factor tree to find the greatest common factor of two numbers. This is one of the simplest ways to find the greatest common factor. So watch this video to get a refresher on how to do prime...

Use prime factorization to find the greatest common factor of three given values. What are the factors that all three given numbers have in common? Identify them, and then multiply together to get the greatest common factor. Just like...

Use prime factorization to find the greatest common factor of four given values. What are the factors that all four given values have in common? Identify them, and then multiply together to get the greatest common factor. Just like that....

What is the greatest common factor of two terms in an expression? First prime factor each of the terms. Then find the factors that they have in common. Multiply if needed. That is how to find the greatest common factor. Watch the video...

Two students have a conversation about the least common multiple (LCM) and greatest common factor (GCF). They briefly describe and give examples of how to find both the LCM and GCF. Note: The dialogue may be difficult to understand,...

Factor out the greatest common factor to simplify a rational expression. When the greatest common factor is divided out of the numerator and the denominator what is left is the rational expression in simplest form. Watch as the teacher...

Knowing how to find the Greatest Common Factor (GCF) is crucial to solving an equation or simplifying an expression. Review for the SAT by watching this tutorial that walks you through the process. [4:57]

Video defines what a greatest common factor is and demonstrates how to determine the greatest common factor of two given monomials. [3:13]

This lesson demonstrates how to find the greatest common factor of more than two numbers. It is 3 of 13 in the series titled "Finding the GCF of Multiple Numbers."

This lesson demonstrates the usefulness of a factor tree when trying to find the greatest common factor. It is 11 of 15 in the series titled "Finding the GCF with a Factor Tree."

This lesson demonstrates the usefulness of a factor chart when trying to find the greatest common factor. It is 1 of 10 in the series titled "Finding the GCF with Factor Charts."

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. It is 5 of 13 in the series titled "Simplifying Fractions."

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. It is 8 of 13 in the series titled "Simplifying Fractions."

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.

In this lesson, the student will learn how to reduce a fraction to its lowest terms by dividing the numerator and denominator by the same value. Students can watch a video tutorial and then take an online quiz.