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CBSE Class 12 Math 2019 Delhi Set 2 Solved Paper

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Question : 9 of 9
Marks: +1, -0
If A=[
2−35
32−4
11−2
], then find A−1. Hence solve the following system of equations :
2x−3y+5z=11,3x+2y−4z=−5,x+y−2z=−3.
OR
Obtain the inverse of the following matrix using elementary operations :
A=[
−112
123
311
]
Solution:  
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