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. Created by Sal Khan.
Systems of equations with substitution - Khan Academy
Notice that neither of these equations are already solved for x or y . As a result, the first step is to solve for x or y first. Here's how it goes:
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Systems of equations with substitution: 2y=x+7 & x=y-4
When solving a system of equations using substitution, you can isolate one variable and substitute it with an expression from another equation. This will allow you to solve for one …
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.
Systems of equations with substitution: potato chips
To solve a system of equations using substitution... 1. Isolate one of the variables in one of the equations, e.g. rewrite 2x+y=3 as y=3-2x. 2. You can now express the isolated variable using …
Systems of equations | Algebra basics | Math | Khan Academy
How can you use clues from two algebraic expressions to figure out the value of a variable? In this unit, you'll learn how to solve a system of equations or inequalities in two variables by …
Systems of equations with substitution - Khan Academy
Solve systems of equations where one of the equations is solved for one of the variables.
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 …
Systems of equations with substitution: y=-5x+8 & 10x+2y=-2
Learn to solve the system of equations y = -5x + 8 and 10x + 2y = -2 using substitution. Created by Sal Khan and Monterey Institute for Technology and Education.