![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
For subtracting matrices, their dimension should be equal.
\First write the dimension of the matrix.
\The first matrix is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f464f67c30b7cbfd8ca9502a6862167d.png\")
The matrix has 2 row and 2 columns, so dimensions of matrix are ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=005d206c92b8d7c609a15bd3eef2db91.png\")
.
The second matrix is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8e051c2cc7992d3be7f0a9fb209c408a.png\")
The matrix has 2 rows and 1 column, so dimensions of matrix are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dbb8695b85dab46fd036d112001e88bf.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The dimensions of matrix are not equal. The operation of subtraction is not possible.