
To reduce: the augmented matrix corresponding to the system of equations and solve the system by using matrix capabilities of a graphing utility.

Answer to Problem 98RE
The solution of the system of equations is
Explanation of Solution
Given information:
Given system of equations
Calculation:
The augmented matrix corresponding to this system of linear equation is
Now, using the matrix capabilities of graphing utility, we can reduce augmented matrix of
Press
Enter elements of the matrices. Clear it.Again press 2nd, matrix keys. Select math key and A:ref(
Finally select names and then press enter key
Multiplying 1st row by 3, 2nd row by 3 and 3rd row by
Now we write down corresponding triangular system
By back substitution we have
and
Therefore the solution of the system of equations is
Chapter 7 Solutions
Precalculus with Limits: A Graphing Approach
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