Are there more than one way to solve systems of equations by elimination?
1 Answer
There are more than one way to solve the system of equations
The most utilised methods are elimination and substitution methods. I prefer substitution than elimination.
Other methods like Cramer's rule and other matrix methods such as Gauss elimination, Gauss - Jacobi are available. These are pretty advanced and can solve any number of linear equations.
A comparison of substitution and elimination methods is given below.
Example
Elimination method
Multiply Eqn 2 by '2' an add with Eqn 1.
______+
Substitute in one of the equations. Using Eqn 1 we have
Hence the solution is
Substitution Method
From Eqn 2 we have
Substitute in Eqn 1
Use in eqn 3
So we get
