\
\
The expression is
\
(Substitute
)
\
(Add
)
\
\\
\
The value of the expression is 12.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d752f66b997f68e71c193dac69f810e8.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=78af5ee8f2f1d22388e2ee6537784897.png\")
(Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9691738d8d07a4e185dba1a7cd89a4b5.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1cd4020f7fd73ca6aa81b89f8eed6b59.png\")
(Add ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=73308feead91ba7f78be75eaa437c828.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
\\