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Systems of equations with substitution: -3x-4y=-2 & y=2x-5
Learn to solve the system of equations -3x - 4y = -2 and y = 2x - 5 using substitution.
Solving systems of linear equations | Lesson - Khan Academy
Look at two ways to solve systems of linear equations algebraically: substitution and elimination. Look at systems of linear equations graphically to help us understand when systems of linear equations have …
Systems of equations with substitution (article) | Khan Academy
The tricky thing is that there are two variables, x and y . If only we could get rid of one of the variables... Here's an idea! Equation 1 tells us that 2 x and y are equal. So let's plug in 2 x for y in Equation 2 to …
Solving linear systems by substitution (old) - Khan Academy
And in this video, I'm going to show you one algebraic technique for solving systems of equations, where you don't have to graph the two lines and try to figure out exactly where they intersect.
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Learn to solve systems of equations using substitution with interactive exercises and step-by-step guidance on Khan Academy.
Systems of equations with substitution - Khan Academy
Solve systems of equations where one of the equations is solved for one of the variables.
Substitution method review (systems of equations) - Khan Academy
The substitution method is a technique for solving a system of equations. This article reviews the technique with multiple examples and some practice problems for you to try on your own.
Equations and inequalities | Khan Academy
Solving linear equations - variable on both sides Get 3 of 4 questions to level up!
Solving systems of three linear equations in three variables: substitution
Sal demonstrates how to solve a system of three linear equations in three variables using substitution. Created by Sal Khan.