The matrices are .
The first matrix dimension is and second matrix dimension is .Since the dimensions are not same, it is impossible to subtract these matrices.
Since the dimensions are not same, it is impossible to subtract these matrices.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=114687053dd6b7630cd40d957785d463.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=02cc88497928e9926ce789d08234a685.png\")
and second matrix dimension is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=da0e7b778f89e18cbeda1e0ed2c1d3e0.png\")
.Since the dimensions are not same, it is impossible to subtract these matrices.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")