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.
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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 variable, which you can …
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.
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Systems of equations with substitution - Khan Academy
Systems of equations with substitution CCSS.Math: 8.EE.C.8, 8.EE.C.8.b, HSA.REI.C.6 Google Classroom Microsoft Teams You might need: Calculator
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Systems of equations with substitution (article) | Khan Academy
It doesn't necessarily matter whether this will be useful in real life, the main point of doing any type of complicated math is to train your brain to use different ways of thinking to come to solutions.