The Telegraph
How your television set has evolved over time | Tech Histories
In this video, we look back at the history of television sets and reveal some fun facts about the household staple, from John Logie Baird demonstrating live image transmission in the 1920s to the advent of plasma and LCD screens and more.
Brian McLogan
Adding two rational expressions by finding common denominators
Learn how to add/subtract rational expressions with trinomials in the denominator. When adding or subtracting two or more rational expressions with common denominators, we add or subtract only the numerator while we keep the denominator...
NUMBEROCK
Adding and Subtracting Fractions
In a future time, when AI robots have taken over running pizzerias on a planet orbiting Alpha Centauri, the robot Zigon takes orders and then adds and subtracts fractions before the Pizzamatic-5000 serves up large pepperoni and cheese...
Bloomberg
Samsung Chairman Lee Kun-hee's Legacy
Oct.25 -- Lee Kun-hee, the man who transformed South Korea's Samsung Electronics into one of the world's most powerful tech titans, has died at the age of 78. Here's a look at his legacy and what the future now holds for Samsung.
Curated OER
How Do You Solve a Word Problem with a Rational Equation?
Translate a word problem into a rational equation. This word problem might cause some to pause and ponder, and some to just give up and skip the problem altogether. It does involve some fractions, so watch this video and get a better...
Curated OER
How Do You Find the Least Common Denominator of Two Rational Expressions?
Adding fractions that are in rational expression form? Do they have a common denominator? No? Well, then the least common denominator needs to be found. How is the least common denominator of rational expression found? Watch this video...
Curated OER
How Do You Solve an Equation With Fractions With Different Denominators Using Addition?
Find the value of a variable in an equation that has fractions with unlike denominators. Use the addition property of equality first to isolate the variable. Then find the LCD and do the math to make the denominators the same. Now they...
Curated OER
Basic Math: Lesson 6 - #10 - Subtraction of Fractions
This is a full lesson created to assist learners in subtracting mixed numbers and fractions. The instructor speaks quickly and fails to explain his thinking completely. He refers to LCD, completes problems involving negative numbers, and...
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Subtracting Mixed Numbers 2
This video explains how to subtract two mixed numbers by converting them to improper fractions. Practice problems are available. [3:59]
Math Mammoth
Math Mammoth: Least Common Denominator
Introduces the topic of Least Common Denominator by first looking for a common multiple of the denominators in two fractions. [11:05]
Khan Academy
Khan Academy: Adding Mixed Numbers
Demonstrates how to add two mixed numbers by adding the whole numbers separately and then finding the least common denominator for the fractions and adding those. The sum of the fractions is then simplified. [2:20]
Khan Academy
Khan Academy: Finding Common Denominators
Explains how to find the least common denominator for the fractions 2/8 and 5/6. [4:42]
Math Playground
Math Playground: Adding Fractions With Different Denominators
This video illustrates how to add fractions that have different denominators.
Khan Academy
Khan Academy: Equivalent Fractions: Finding Common Denominators
This video shows how to rewrite two fractions as fractions with a least common multiple.
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 10
This lesson covers how to find the lowest common denominator of two or more fractions. It is 10 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 13
This lesson covers how to find the lowest common denominator of two or more fractions. It is 13 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 14
This lesson covers how to find the lowest common denominator of two or more fractions. It is 14 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 2
This lesson covers how to find the lowest common denominator of two or more fractions. It is 2 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 3
This lesson covers how to find the lowest common denominator of two or more fractions. It is 3 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 4
This lesson covers how to find the lowest common denominator of two or more fractions. It is 4 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 8
This lesson covers how to find the lowest common denominator of two or more fractions. It is 8 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 9
This lesson covers how to find the lowest common denominator of two or more fractions. It is 9 of 14 in the series titled "Finding the Lowest Common Denominator."