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You do the following:

1) Solve one of the equations for one of the variables

2) Substitute this variable in the other equation or equations

3) Simplify

This should normally give you one less equation than the original set, with one less variables. For example:

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10y ago

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Related Questions

How do use substitution when solving system of equations?

You use substitution when you can solve for one variable in terms of the others. By substituting, you remove one variable from the equation, which can then be solved. Once you solve for one variable, you can use substitution to find the other.


To solve the system given below using substitution it is best to start by solving the second equation for y?

True


How would use solve the system of equation x plus 3y equals 23 by using substitution?

You'd need another equation to sub in


What is usually the first step in solving a system of equation by substitution?

The first step is to solve one of the equations for one of the variables. This is then substituted into the other equation or equations.


How do you solve system of eqaution by subsitution?

To solve a system of equations by substitution, first solve one of the equations for one variable in terms of the other. Then, substitute this expression into the other equation. This will give you an equation with only one variable, which you can solve. Finally, substitute back to find the value of the other variable.


What 4x y14 and 2x y8 solve using substitution?

You cant solve it unless it is an equation. To be an equation it must have an equals sign.


How can you solve a linear equation?

by elimination,substitution or through the matrix method.


What is Solve By Substitution y0.5x 2 -y-2x 4?

To solve the following equation by substitution, we need to have the equal sign. This will help us group the knowns and the unknowns.


Can solve a system of linear equation by substitution?

Yes, a system of linear equations can be solved by substitution. This method involves solving one of the equations for one variable and then substituting that expression into the other equation. This process reduces the system to a single equation with one variable, which can then be solved. Once the value of one variable is found, it can be substituted back to find the other variable.


What are three ways to solve a system?

elimination, substitution and graphing


Translate this word problem as a system of equations and then solve using substitution?

A system of equations is two or more equations that share at least one variable. Once you have determined your equations, solve for one of the variables and substitute in that solution to the other equation.


To solve a three variable system of equations you can use a combination of the elimination and substitution methods?

True. To solve a three variable system of equations you can use a combination of the elimination and substitution methods.