![\"\"](\"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=8479713d569dc125e6923eb73491b63f.png\")
The matrix has 3 row and 1 columns, so dimensions of matrix are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=02cc88497928e9926ce789d08234a685.png\")
.
The second matrix is, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3e9fd0f8595d126e2ed896609f893ff9.png\")
The matrix has 1 row and 3 columns, so dimensions of matrix are ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=da0e7b778f89e18cbeda1e0ed2c1d3e0.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
The dimensions of matrix are not equal.
\The operation of addition is impossible.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The operation of addition is impossible.