Question

5z + 3x + 2y = 7
7x + 5z + 3y = 17
5y + 5x + 7z = 13

Solve using matrix inversion ​

Answer 1

In the MATRIX INVERSE METHOD (unlike Gauss/Jordan), we solve for the matrix variable X by left-multiplying both sides of the above matrix equation (AX=B) by A-1. Typically, A-1 is calculated as a separate exercize ; otherwise, we must pause here to calculate A-1. ... Note: A-1 is on the LEFT side of both products.

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