document.write( "Question 863666: solve the matrix equation. [4 -7]over[1 8]-x=[-9 4]over[-1 5]. answers given are -13 11, -2 -3 13 -3, 2 3 13 -11, 2 3 -5 11, 0 13.
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Algebra.Com's Answer #520741 by morenike(2) $\"\"$ $\"About$

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in solving for subtraction under matrices,you must check for their conformability.ie..they must be square matrix for the solution to be solved.
\n" ); document.write( "since this matrix is a 2*2 matrix,it is conformable.
\n" ); document.write( "\4 -7 / \-9 4 /
\n" ); document.write( "\1 8 / - \-1 5/
\n" ); document.write( " =\4-(-9) -7-(4)/
\n" ); document.write( " \1-(-1) 8-5 / =
\n" ); document.write( " \4+9 -7-4/
\n" ); document.write( " \1+1 8-5/
\n" ); document.write( " =\13 -11/
\n" ); document.write( " \2 3 / \n" ); document.write( "

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