Question 1198415
.


You can do it using your calculator.



For instructions, use this video-lesson

https://www.youtube.com/watch?v=1yoja6phh3w



or this textual description

https://www.mathbootcamps.com/finding-the-inverse-of-a-matrix-with-a-ti83-or-ti84-calculator/



Or use online free-of-charge calculator www.reshish.com,

from which @MathLover1 copy-pasted her solution,

but did not provide the proper link to the source.