Jenni M.

asked • 06/07/18

Use algebra to solve for X in the matrix.

This is a 2x2 matrices problem. However, I am unable to type the matrices symbol in so I wrote it out.
 
Given A = 7  ,   x (top row) 15  ,  22 (bottom row). and the determinant for matrix A is 289, use algebra to solve for x.

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