whether the two system of linear equation yield same solution and if so find the solution of system of linear equations.
Answer to Problem 80E
Two system of linear equations yield the same solution and the solution of the two system of linear equation is
Explanation of Solution
Given information: Two system of linear equations
(a)
(b)
Concept used:Gaussian Elimination is the process of using valid row operations on a matrix until it is in reduced row echelon form
Calculation:
The solution of the first system is obtained as:
(a)
From equation 3, the value of
Finally, substitute
The solution of the first system is
Now, check solution of second system,
(b)
From equation 3the value of
Finally, substitute
The solution of a is
Therefore, two system of linear equations yield the same solution
Chapter 7 Solutions
Precalculus with Limits: A Graphing Approach
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