The matrices are .
The dimension of first matrix is and the dimension of second matrix is .
The above two matrices have different dimensions, so the operation (subtraction) cannot be performed.
The solution is impossible.
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fdb948501136a9fc9590ef122574570b.png\")
and the dimension of second matrix is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=da0e7b778f89e18cbeda1e0ed2c1d3e0.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")