To Find: The solution of the system of linear equation and check the solution algebraically
Answer to Problem 21E
The solution is
Explanation of Solution
Given information:The given system of three linear equations in three variables
Concept used:Gaussian Elimination is the process of using valid row operations on a matrix until it is in reduced row echelon form
Calculation:
Adding the first equation to the second equation
______________________.
Adding the first equation to the second equation produces a new second equation
Adding the second equation to -1 times the third equation
______________________.
Adding the second equation to
Finally, we need a coefficient of
Multiplying the third equation by
From equation
Finally, substitute
The solution is
Chapter 7 Solutions
Precalculus with Limits: A Graphing Approach
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