How do you solve a system of linear equations using substitution or elimination?
To solve a system of linear equations using substitution or elimination, first, you need to have two or more linear equations with the same variables. Then, you can use substitution or elimination method to solve the system of equations.
Substitution method involves solving one of the equations for one variable and then substituting that expression into the other equation. This will result in a single equation with one variable, which can then be solved for the value of the variable. This value can then be substituted into one of the original equations to find the value of the other variable.
Elimination method involves adding or subtracting the equations to eliminate one of the variables. After one of the variables has been eliminated, the resulting equation can be solved for the value of the remaining variable. This value can then be substituted into one of the original equations to find the value of the other variable.
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