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Brian McLogan
Solving a word problem using substitution and elimination
In this video series I will show you how to solve a word problem by setting up a system of equations. When working with word problems it is very important to read the whole problem through and then determine what is the problem asking....
Professor Dave Explains
The Chemistry of Arynes (Benzyne)
In this course we've come across some surprising structures, but benzyne is one of the most surprising. It would seem impossible that a triple bond could form on a benzene ring, and in truth it can't fully form, but benzyne is a molecule...
Brian McLogan
How to use a system of equations to solve a word problem
👉Learn how to solve a system of linear equations from a word problem. A system of equations is a set of more than one equations which are to be solved simultaneously. A word problem is a real world simulation of a mathematical concept....
Curated Video
Real World Systems of Linear Equations
In this short math video we will solve a standardized math test question where we are asked to write and solve a real world system of linear equations. We will write two equations to model the given real world situation. We will...
Professor Dave Explains
Alkyne Synthesis by Double Dehydrohalogenation
An overview of alkyne synthesis via double dehydrohalogenation.
Curated Video
Solving Systems of Equations by Elimination with Opposite Coefficients
In this lesson, students will learn how to solve systems of equations using the elimination method when opposite coefficients are present. The video explains the concept of opposite coefficients and how they allow us to cancel out...
Curated Video
Solving Systems of Linear Equations by Elimination
In this lesson, mathematicians will learn how to solve systems of two linear equations using the elimination method. By manipulating the equations and eliminating variables, students can find the values of each variable and determine the...
Why U
Algebra 44 - Solving Systems of Equations in Three Variables
Systems of three linear equations in three variables can be solved using the same techniques of substitution and elimination used to solve systems of two linear equations in two variables.
Curated Video
Choosing the Right Method: Solving Systems of Equations
Learn how to choose between elimination and substitution methods to solve a system of equations. This video provides examples and discusses the advantages and disadvantages of each method. The goal is to help students understand when to...
Khan Academy
Solving Systems of Equations by Elimination, Algebra Basics
Elimination is another method for solving systems of equations, in addition to graphing and substitution. Sal's lecture is straightforward to understand, even for students who struggle with learning. By having a variety of options when...
Curated OER
How Your Body Works 1, Overview of Nutrition & Wellness
Nutritionist Radhia Gleis explains what metabolism is and how to assess it. Food is processed and used by the body producing waste in the end. The steps of the digestive system are explained from its beginning in the mouth to its end in...
Curated OER
Digestive Enzymes, Nutrition and Your Health
As Natalie describes in this video, nutrition is about more than just having a healthy diet. Your body's absorption, digestion, and elimination is key in your overall health. The function of enzymes is clearly explained along with the...
Curated OER
How Do You Use a System of Linear Equations to Find Coordinates on a Map?
It seems like a pretty complicated word problem in which Batman is trying to locate the Riddler. The instructor does a good job of setting up the two equations that will help Batman locate the Riddler. Two equations? Yes, a system, and...
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 1
This video demonstrates how to solve a system of linear equations using the elimination method. [3:38]
Khan Academy
Khan Academy: Algebra: Solving Systems by Elimination 3
This video demonstrates how to solve and graph a given system of equations by eliminating a variable. [4:58]
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 4
This video demonstrates how to set up and solve a system of linear equations using the elimination method. [2:38]
Khan Academy
Khan Academy: Algebra: Systems of Three Variables 2
This video demonstrates how to solve a system comprised of three equations in three variables using elimination. [7:00]
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 2
This video demonstrates how to solve a system of linear equations using the linear combination and elimination method. [4:25]
Khan Academy
Khan Academy: Algebra: Addition Elimination Method 3
This video demonstrates how to solve a system of linear equations using the linear combination elimination method. Results in a dependent system. [5:05]
Khan Academy
Khan Academy: Algebra: Solving Systems of Equations by Multiplication
This video demonstrates more examples of how to solve systems of equations by elimination. The examples in this video require that one or both equations be scaled in order to eliminate a variable. [12:00]
Khan Academy
Khan Academy: Algebra: Solving Systems by Elimination 2
This video demonstrates how to solve a system of linear equations by eliminating a variable. The given system is of two equations in two variables. [3:45]
Khan Academy
Khan Academy: Algebra: Solving Systems by Elimination
This video demonstrates how to set up and solve a system of equations in order to solve a word problem. The system is solved using the elimination method. [5:51]
Khan Academy
Khan Academy: Algebra: Solving Systems of Equations by Elimination
This video gives two examples of how to solve systems of equations by elimination. The first example gives the system of equation to be solved and the second example is a word problem that involves setting up and solving the system of...
Khan Academy
Khan Academy: Solving Systems With Elimination: Addition Elimination Method 2
This video demonstrates how to solve a system of linear equations using the linear combination and elimination method.