In Exercises 912, find x and y or x, y, and z. 9. [ x 9 7 y] = [ 5 9 7 8]
Chapter 8, Problem 9(choose chapter or problem)
Equality of Matrices In Exercises 9-12, find x and y or x, y, and z.
\(\left[\begin{array}{rr} x & -7 \\ 9 & y \end{array}\right]=\left[\begin{array}{ll} 5 & -7 \\ 9 & -8 \end{array}\right]\)
Text Transcription:
[ _9 y ^x -7] = [ _9 -8 ^5 -7]
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