![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
For adding 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=7d9d0b222b97833de7dc547c15b6ae6e.png\")
The matrix has 3 rows and 2 columns, so dimensions of matrix are ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9b9c7cdc1dfccf217e598039b56c8ed4.png\")
.
The second matrix is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ec978ec8aa2abe195fcbdbbdba28d151.png\")
The matrix has 3 rows and 3 columns, so dimensions of matrix are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9ee2f93d2de4eb626e0320c8367c6a07.png\")
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The dimensions of matrix are not equal. The operation of addition is not possible.