![\"\"](\"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 dimensions of matrix C and D are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fdb948501136a9fc9590ef122574570b.png\")
.
The operation C + D is possible.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Add the matrix C + D.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d91a8391b5725ab1ffe1ff952ce10a51.png\")
(Substitute the values of C and D)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f2466fcaefcb737e9634d6246a4688b6.png\")
(Add corresponding elements)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7ae6055c4ed1dc24c1f585043f4781de.png\")
(Simplify)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The value of C + D is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ed6523589cad3023dda5c038dc32b579.png\")
.