Computing inverse of a matrix with an example

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A) You go to the shops on Monday and buy 1 apple, 1 banana, and 1 carrot; the whole transaction totals €15. On Tuesday you buy 3 apples, 2 bananas, 1 carrot, all for €28. Then on Wednesday 2 apples, 1 banana, 2 carrots, for €23……

https://math.stackexchange.com/questions/4321843/computing-inverse-of-a-matrix-with-an-example

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