SOLUTION: Cramer’s rule problem. https://ibb.co/G954wWn

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Question 1199085: Cramer’s rule problem.
https://ibb.co/G954wWn
Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
.

I don't know what A(1), A(2), A(3) mean in this problem.

    The composer does not go into such details :)



But if they are introduced in accordance with logic and common sense, then


    y =  =  = 3.    ANSWER

Solved.



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