50 POINTS! I’d really like someone to help me out with the answer, I’ve been having a lot of trouble. I’d like and explanation as well and I’ll give brainliest if provided!

The solution to the matrix equation is x = 2.6
Following the matrix as given, all the elements in the right hand side would have to be multiplied by X hence we have;
-x 4x -8 17
6x 3x = 21 -21
Taking the determinant of both matrices;
-3x^2 - 24x^2 = 168 - 357
-27x^2 = -189
x^2 = -189/-27
x = 2.6
Learn more about matrices:https://brainly.com/question/11367104
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