
To find: the solution of the equation using Cramer’s rule.

Answer to Problem 27SGR
Explanation of Solution
Given:
Concept used:
Steps to solve the inverse of matrix by
Step1: calculating the matrix of minors.
Step2: turn that into the matrix of cofactors.
Step3: then ad jugate by transposing the cofactor.
Step4: last multiply by the
Formula for inverse of matrix A is:
Calculation:
Here,
It can be written on the basis of linear equations in matrix form
Let
Since,
Finding
Since
Hence comparing matrix of L.H.S and R.H.S
Chapter 4 Solutions
Algebra 2
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